ANSYS在海洋工程中的应用

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ANSYS在海洋工程中的应用

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  • ANSYS CAE ANSYS FEMFinite Element Method ISO9001CAE

    ANSYS

    mary

  • ANSYS9.0ANSYS ANSYS APDL APDL

    ANSYSANSYSANSYS

    ANSYS

    ANSYS

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    1.1 ANSYS.................................................................................................................................. 11.1.1 ANSYS.......................................................................................................................11.1.2 .....................................................................................................................2

    1.2 ........................................................................................................................61.2.1 .................................................................................................................61.2.2 ...............................................................................................71.2.3

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    2.1 ..............................................................................................................................................102.1.1 .........................................................................................................................................112.1.2 .....................................................................................................................................11

    2.2 ..............................................................................................................................................122.2.1 .........................................................................................................................................122.2.2 .....................................................................................................................................12

    2.3 ..................................................................................................................................................152.3.1 .....................................................................................................................................152.3.2 .....................................................................................................................................15

    2.4 ..............................................................................................................................................172.4.1 .....................................................................................................................172.4.2 .....................................................................................................................................19

    2.5 ..............................................................................................................................................212.5.1 .................................................................................................................................212.5.2 ANSYS.................................................................................................................23

    2.6 ................................................................................................................................................23

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    3.1 ANSYS.................................................................................243.1.1 PIPE16.................................................................................................................... 243.1.2 PIPE20.................................................................................................................... 273.1.3 PIPE59.................................................................................................................... 293.1.4 BEAM4................................................................................................................... 333.1.5 SHELL43................................................................................................................ 373.1.6 COMBIN39.............................................................................................................383.1.7 SOLID45.................................................................................................................383.1.8 MASS21..................................................................................................................39

  • 3.2 ANSYS................................................................................................................403.2.1..................................................................................................................................403.2.2..................................................................................................................................433.2.3..............................................................................................................................45

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    4.1 ..............................................................................................................................474.1.1 .................................................................................................................474.1.2 ANSYS..........................................................................................48

    4.2 ..................................................................................494.2.1 .............................................................................................................................................494.2.2 .........................................................................................................................................564.2.3 .........................................................................................................................................59

    4.3 ..........................................................................................................................644.4 ................................................................................................................................................66

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    5.1 ..............................................................................................................................705.2 PY.....................................................................................................................................715.2.1 Py.................................................................................................................. 715.2.2 Py...................................................................................................................... 735.2.3 Py.................................................................................................................. 74

    5.3 P-Y ANSYS................................................................................................................ 745.4 ..................................................................................................755.4.1 .....................................................................................................................................765.4.2 .................................................................................................................................815.4.3 .................................................................................................................................86

    5.5 ................................................................................................................................................90

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    6.1 ......................................................................................................................976.2 ..................................................................986.2.1 .........................................................................................................................................996.2.2 .............................................................................................................................................996.3.3 .......................................................................................................................................1116.3.4 .......................................................................................................................................116

    6.4 ..............................................................................................................................................127

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    134134134

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    7.1 ............................................................................................................................1347.2 ................................................................................1367.2.1 .......................................................................................................................................1377.2.2 ...............................................................................................................................141

  • 7.2.3 .......................................................................................................................................1447.3 ............................................................................................................................................152

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    8.1 ........................................................................................................................1598.2 ....................................................................1608.2.1 .......................................................................................................................................1618.2.2 .......................................................................................................................................1648.2.3 ...............................................................................................................................172

    8.3 ............................................................................................................................................176

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    181181181

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    9.1 ..............................................................................................................................1829.1.1 .......................................................................................................................1829.1.2 ...................................................................................................................1849.1.3 ...................................................................................................................186

    9.2 ..............................................................................1889.2.1 ...........................................................................................................................1889.2.2 .......................................................................................................................1899.2.3 ...............................................................................................................................190

    9.3 ..........................................................................................................1929.3.1 ...............................................................................................................................1929.3.2 .......................................................................................................................192

    9.4 ..................................................................................................1959.4.1 ...............................................................................................................................1959.4.2 .......................................................................................................................196

    9.6 ..............................................................................................................................................199

  • ANSYS

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    ANSYS CAE ANSYS ISO9001(ASME)NQAWindowsUNIXLinux PCANSYSCFDANSYS PC ANSYS

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    ANSYS 40 1970 40ANSYS

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    20 70ANSYS70

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    ANSYS11.0ANSYS/ ANSYSAPDL

    1.1.21.1.21.1.2

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    ANSYS 1-1

    1-1 ANSYS

    PRE7SOLUTIONPOST 1POST26ANSYS

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    LOG LOG.LOGLOGANSYS ANSYS 100

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    Preprocessor ANSYS

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    ANSYS CADANSYS

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    1.1 ANSYS

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    ANSYS POST1POST26

    1 POST 1

    General Postproc

    0 STATIC

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    4 TRANS

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    ()()()

    2 POST 26

    TimeHist PostprcPOST26

    ANSYS ANSYS

    1.21.21.2

    1.2

    34% 1000 380 100IEA2003 12.5734.1%1992 26.5%2002 34%2003 3.7% 3.5% 19922002 1.1% 3.7% 3

    BP2005,1981 29.9 2004 40.4(IEA) 2000-2030 1.6% 2030 57.69 2030 65%2030 99.72

    1.2.11.2.11.2.1

    1.2.1

    1993 2005 9000

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    20 60 20m 80 100m 5002000m 12 78 1500m

    1993 280 266 100 , 35 ;: 1050 2000 77 4. 36 175/ 710. 33

    1.2.21.2.21.2.2

    1.2.2

    71%

    1896 200 20 40 7 1979 7000

    20 50 200 600~900

    20 701965 70

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    1976 350

    20 80

    1.2.31.2.31.2.3

    1.2.3

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    FPSOTL P SPAR

    FPSO TL P SPAR TL P SPAR 12345

    222

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    , ,,1965 1968 (Rowlandhorn)1969 2 20001997 41980 Ekofisk Alexander L Kielland 122 2001 P -36

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    2.12.12.1

    2.1

    12 33/ 10601978 9 25 50 25.7/ 82 43.14/ 800

  • ANSYS

    11

    2.1.12.1.12.1.1

    2.1.1

    10%

    1

    10 1 1(1 , )R

    v hr z

    R

    z z

    2.10.125(1 , ) (1 , )( / )R R

    v hr z v hr z z z

    3 50 5 1 1

    2.1.22.1.22.1.2

    2.1.2

    2.220 21

    v

    g

    W

    P

    A F

    2.3APKKF

    Z 0

    NF

    1.5 0.5K

    1.0

    1.0Z

    K

    m2A

    Pa0P

    2.420 tVP

    0.613 --m/s. 42 /msN t

    V

  • ANSYS

    12

    2.22.22.2

    2.2

    2.2.12.2.12.2.1

    2.2.1

    1

    2

    3

    4

    5

    6

    7

    8

    9

    2.2.22.2.22.2.2

    2.2.2

    1

    2.52

    max2

    1cWDc

    DvCf

  • ANSYS

    13

    c

    f

    D

    C

    maxcv

    W

    3/mkg

    D

    2

    c

    F

    2.6S

    zDc

    duCD

    g

    W

    F

    0

    2

    2

    c

    F

    W

    3/mkg

    g

    2/8.9 sm

    Dm

    S m

    D

    C

    u

    sm /

    z

    d m

    3

    2.77

    1

    H

    h

    v

    H

    h

    vv

    Tmch

    ch

    v

    h

  • ANSYS

    14

    m

    v

    T

    v

    H

    h

    4

    :D

    C

    1

    Re

    2.8

    vD

    R

    e

    sm /101 26 v

    2.8 2.1

    D

    C

    2. 1

    2

    DK /

    0.001~0.1

    100% 20%D

    e

    R D

    C

    5102e

    R

    2.1

    55 105102 e

    R

    3.0

    65 105105 e

    R

    7.0~6.0

    6105e

    R

    7.0~6.0

  • ANSYS

    15

    2.32.32.3

    2.3

    2.3.12.3.12.3.1

    2.3.1

    1

    2

    3

    4

    5

    2.3.22.3.22.3.2

    2.3.2

    1

    2

  • ANSYS

    16

    D 2.0/ LD D

    L 2.0/ LD

    1 2.0/ LD

    Mac CamayFucks 1954--Froude-Krylov

    2 2.0/ LD

    Morison

    2.92 2

    2

    1

    2 4wy D w M wy y D u y

    f C D u u C

    t t t t

    f mKN /

    3/mkg

    D

    m

    usm /

    D

    C

    M

    C

    2.9Morison 1950

    MorisonAiry Stokes

    Stokes StokesABS,DNV Stokes Stokes Stokes

    mary

    mary

  • ANSYS

    17

    Morison

    Re, K-CD

    C

    M

    C

    D

    C

    M

    C

    D

    C

    M

    C

    2.2D

    C

    M

    C

    2.2

    2.42.42.4

    2.4

    2.4.12.4.12.4.1

    2.4.1

    -18.3 12 3

    1

    2

    D

    C

    M

    C

    0.40.5 1.2 5

    0.88 1.1842.470 3

    0.578 1.628 8

  • ANSYS

    18

    1

    2

    3

    4

    5

    6

    1

    2

    3;

    1

  • ANSYS

    19

    2

    2.4.22.4.22.4.2

    2.4.2

    2.10c

    DhF

    D h

    c

    n

    1 Korzhavin

    2.11c

    mKDh

    V

    V

    IF

    3

    1

    0

    )(

    15 =2.5 I I V

    =1.Om/s 0.4--0.70V m K()

    2.12c

    mIKDhF

    2 APIRP2N

    2.13c

    IKDhF

    I K

    3 API2A

    2.14c

    CDhF

    0.3--0.7 C

    c

    4 CSA

    2.15c

    DhpF

  • ANSYS

    20

    0.689~2.26Mpac

    p

    5

    2.16c

    DhmF

    '

    0.4~0.7 'm

    c

    1.381.72Mpa

    6Afanasev

    2.17c

    mIDhF

    1.00.4

    0.11.067.117.4

    15.2

    6151

    h

    D

    I

    h

    D

    h

    D

    I

    h

    D

    I

    h

    D

    D

    h

    I

    7

    2.18c

    mIKDhF

    2.5 0.9 0.45I

    m

    K

    c

    r

    hDF

    5.0

    1 Schwatz 1976 Schwarz 60cm

    IOWA 0 C0

    2.19c

    hDF

    1.15.057.3

    , cm cm21991D h

    c

    /KN

    Schwarz

    2.20c

    hDF

    1.15.05.30

    2 Hamayama:

    2.21c

    hCDF

    5.0

    5.0 6.8C

  • ANSYS

    21

    2.52.52.5

    2.5

    2.5.12.5.12.5.1

    2.5.1

    2.5.1.1

    1900 F m

    2.22maxmaF

    2.5.1.2

    20 40

    m at

    2.23(t) (t)F ma

    t

    2.24WagWmatF maxmax )/()(

    mgW g ga /max

    T 2.1)(t

  • ANSYS

    22

    0.45

    0 30.1Tg

    T(s)

    Tg /T)( 0.9.

    2-1

    3.3max gT

    2.3 max gT

    )(Tv

    )(T )2/3~2/1(V

    2.25WFv

    2.5.1.3

    2.5.22.5.22.5.2

    2.5.2

    ANSYSANSYSANSYS

    ANSYS

    g

    T

    0.2 0.3 0.4 0.65 0.25 0.45 0.55 0.85

    max 7 8 9

    max 0.08 0.16 0.32

  • ANSYS

    23

    2.5.2.1

    ANSYSSPRSMPRSDDAMPSD

    2.5.2.2

    FULLReducedMode Superposition

    2.62.62.6

    2.6

    ANSYS

  • ANSYS

    24

    333

    3

    ANSYSANSYSANSYS

    ANSYS

    ANSYS

    ANSYS

    3.13.13.1

    3.1

    ANSYSANSYSANSYS

    ANSYS

    ANSYS ANSYS 3.1

    3.1

    3.1.13.1.13.1.1

    3.1.1

    PIPE16PIPE16PIPE16

    PIPE16

    3.1.1.1

    PIPE16 3-1

    1 PIPE16

    2 PIPE20

    3 PIPE59

    4 BEAM4

    5 SHELL43

    6 MASS21

    7 COMBIN39

    8 SOLID45

    mary

    mary

  • ANSYS

    25

    PIPE16 XYZ

    3-1 PIPE16

    ANSYS PIPE59

    3.1.1.2

    PIPE16 2 3OD TKWALLSIFFLEXDENSFLDENSINTKINTKCORRAREAINMWALLSTIFFSPINPIPE16 3.2

    3.2 PIPE16

    PIPE16

    IJKK

    UXUY, UZ, ROTX, ROTY, ROTZ

    ODTKWALL

    EX, PRXY, DENS

    1-PINT, 2-PX, 3-PY, 4-PZ, 5-POUT

    T

    mary

    mary

    mary

    mary

    mary

    mary

    mary

    mary

    mary

  • ANSYS

    26

    3.1.1.3

    PIPE16 3-2 PIPE16 3.3

    3-2 PIPE16

    3.3 PIPE16

    KEYOPT1 0- 1-

    KEYOPT2

    0- SIFI SIFJ1-T I2-T J3-T

    KEYOPT4

    0-1-2-3 -4 -5-6-T

    KEYOPT5

    PXPY PZ0-1-

    KEYOPT60-2-

    KEYOPT70-1 -

    SDIR

    SBEND

    ST

    SSF

    mary

    mary

    mary

    mary

    mary

    mary

    mary

    mary

    mary

    mary

    mary

  • ANSYS

    27

    ETABLEANSYS I J

    3.1.23.1.23.1.2

    3.1.2

    PIPE20PIPE20PIPE20

    PIPE20

    3.1.2.1

    PIPE20 3-3

    PIPE20 PIPE16 PIPE20 XYZ

    3-3 PIPE20

    3.1.2.2

    3-2PIPE20PXPYPZ

    S(1MX,3MN,INTMX,EQVMX)

    S(AXL, RAD, H, XH)

    S(1, 3, INT, EQV)

    EPEL(AXL, RAD, H, XH)

    EPTH(AXL, RAD, H)

    MFOR(X, Y, Z) I J()

    MMOM(X, Y, Z) I J

    mary

    mary

    mary

    mary

    mary

    mary

  • ANSYS

    28

    I TAVG TUNIF I J J I TUNIF PIPE20 3.4

    3.4 PIPE20

    3.1.2.3

    PIPE20 3-4 PIPE20 PIPE16

    3-4 PIPE20

    PIPE20

    PIPE20

    IJ

    UXUYUZROTXROTYROTZ

    ODTKWALLSIFI- KEYOPT2=4SIFJ- KEYOPT2=4

    EX, PRXY, DENS

    1-PINT, 2-PX, 3-PY, 4-PZ,

    5-POUT

    T

    KEYOPT20-4- I J

    KEYOPT60-2-

    mary

    mary

    mary

    mary

    mary

  • ANSYS

    29

    1.0 1.0

    3.1.33.1.33.1.3

    3.1.3

    PIPE59PIPE59PIPE59

    PIPE59

    3.1.3.1

    PIPE59 3-5

    PIPE59 xyz XYZ PIPE16 LINK8

    3-5 PIPE59

    3.1.3.2

    PIPE59

    PIPE59 3-6 ZZ

    20.125e

    D

    e

    D

    PIPE16 PIPE20 3.5

    3.1.3.3

    8 z z

    mary

    mary

    mary

    mary

    mary

    mary

    mary

    mary

    mary

    mary

    mary

    mary

    mary

    mary

  • ANSYS

    30

    ANSYS 3.6

    3-6 PIPE59

    3.5 PIPE59

    DO (Do)

    TWALL ( Do/2.0)

    CD (CD)

    CM (CM)

    DENSO () (/ 3)

    FSO Z ()

    CENMPL ()

    CI

    CB

    CT

    ISTR .

    DENSIN

    TKIN

    TWISTTEN

    mary

    mary

    mary

    mary

    mary

    mary

    mary

  • ANSYS

    31

    3.6

    3.1i

    N

    i

    i

    N

    i

    iS

    ww

    H

    cos211

    S

    W

    N

    25

    2

    W

    W

    W

    Kiif

    Kif

    N

    WATER TABLE KWAVEW

    K

    i

    i

    i

    H

    2

    10

    W

    W

    i

    Kif

    orKif

    H

    4)5(

    3)5(2

    2)5(2

    1)5(0.0

    320)5()(360

    2

    100)5(360

    2

    KEYOPT

    KEYOPT

    KEYOPT

    KEYOPT

    KKEYOPTi

    tR

    KKEYOPT

    tR

    W

    i

    ii

    W

    i

    ii

    i

    X-YR

    i

    100)()(W

    i

    KiWLiWL

    t

    i

    3

    3)(

    W

    W

    i

    K

    Ki

    i

    STOKESWATER TABLE

    KWAV

    0

    1 Airy

    2 Stokes

    3

    mary

    mary

    mary

    mary

    mary

    mary

  • ANSYS

    32

    ANSYS 3-7

    3-7

    CDCM WATERTABLE ANSYS PIPE59WaterWaterWater

    Water

    MotionMotionMotion

    Motion

    TableTableTable

    Table

    3.7

    3.7

    KWAVE STOKES2

    KCRC01

    0-

    1-

    2- KCRC=1 KCRC=2

    DEPTH PIPE59

    DENSW

    XW

    Z(1)Z(2)Z(3) Z(1)

    1-5 KWAVE KCRC DEPTH DENSWW

    7-12 Z(1) W(1) (1)d

    Z(2) W(2) (2)d

    13-18 Z(3) W(3) (3)d

    79-81 A(1) (1) (1)

    mary

    mary

    mary

  • ANSYS

    33

    W(1)W(2)W(3)

    (1) (2) (3)Xd

    d

    d

    KCRC=0 1 KCRC=2

    A(1)

    (1)

    (1)

    STOKES

    3.1.3.4

    PIPE59 3-8 PIPE16 ANSYS PIPE59Output Data

    3-8 PIPE59

    PIPE59 ANSYSPIPE59

    3.1.43.1.43.1.4

    3.1.4

    BEAM4BEAM4BEAM4

    BEAM4

    3.1.4.1

    BEAM4 3-9

    BEAM4X,Y,Z X,Y,Z

    mary

    mary

    mary

    mary

    mary

    mary

    mary

    mary

  • ANSYS

    34

    3-9 BEAM4

    3.1.4.2

    BEAM4IZZ IYYTKZTKY X XIXX 3.8

    3.8 BEAM4

    mary

    mary

  • ANSYS

    35

    3.9

    3.9 BEAM4

    BEAM4

    I,J,K

    UX,UY,UZ,ROTX,ROTY,ROTZ

    AREA,IZZ,IYY,TKZ,THETA,ISTRN,IXX,SHEARZ,SHEARY,SPIN,ADDMAS

    EX, ALPX(or CTEX or THSX),DENS,GXY,DAMP

    1(I-J)-Z 2(I-J)-Y 3(I-J)+X 4(I)+X 5(J) -X

    T1,T2,T3,T4,T5,T6,T7,T8

    KEYOPT(2)

    0- NLGEOM1-2-

    KEYOPT(6)

    0-1-

    KEYOPT(7)

    0-1- SPIN 0IYY=IZZ

    KEYOPT(9) I JN- N(N=0,1,3,5,7,9)

    KEYOPT(10)

    SFBEAM0-1-(0.0~1.0)

    1 AREA

    2 IZZ

    3 IYY

    4 TKZ Z

    5 TKY Y

  • ANSYS

    36

    3.1.4.3

    BEAM4 BEAM4 3-10

    3-10 BEAM4

    3.10 BEAM4 ETABLEPOST1 ESOLPOST26

    3.10

    6 THETA X

    7 ISTRN

    8 IXX

    9 SHEARZ Z [1]

    10 SHEARY Y [2]

    11 SPIN ( KEYOPT(7) = 1)

    12 ADDMAS /

    1SHEARZ IZZ SHWARZ0 Y

    2SHEARY IYY SHWARY0 Z

    SDIR

    SBYT +Y

    SBYB -Y

    SBZT +Z

    SBZB -Z

    SMAX (+)

    SMIN (-)

    EPELDIR

    EPELBYT +Y

    EPELBYB -Y

    EPELBZT +Z

    EPELBZB -Z

  • ANSYS

    37

    3.1.53.1.53.1.5

    3.1.5

    SHELL43SHELL43SHELL43

    SHELL43

    SHELL43XY Z XY Z

    3-11

    3-11 SHELL43

    3-11 SHELL43 X X Y THETA

    TKI

    EPTHDIR

    EPTHBYT +Y

    EPTHBYB -Y

    EPTHBZT +Z

    EPTHBZB -Z

    EPINAXL

    MFOR(X, Y, Z) XYZ

    MMOM(X, Y, Z) XYZ

  • ANSYS

    38

    3.1.63.1.63.1.6

    3.1.6

    COMBIN39COMBIN39COMBIN39

    COMBIN39

    COMB1N39 XY Z: XY Z 3-12

    COMBIN39 20

    3-12 COMBIN39

    3-12 F1D1 3601e-700

    3.1.73.1.73.1.7

    3.1.7

    SOLID45SOLID45SOLID45

    SOLID45

    SOLID45. 8, 3 XY Z, 3-13

    8

    KEYOPT(1)KEYOPT(5) KEYOPT(6) KEYOPT(2)=11

  • ANSYS

    39

    3-13 SOLID45

    CPU

    .ESAV.OSAV222 1/7

    KEYOPT(1)=0,KEYOPT(2)=0

    4

    3.1.83.1.83.1.8

    3.1.8

    MASS21MASS21MASS21

    MASS21

    MASS21 X,Y Z X,Y Z 3-14

    3-14 MASS21

  • ANSYS

    40

    KEYOPT(3)

    3.23.23.2

    3.2

    ANSYSANSYSANSYS

    ANSYS

    ANSYS

    3.2.13.2.13.2.1

    3.2.1

    3.2.1.1

    3.2.1.2

    3.2.1.3

    3.2.1.4

  • ANSYS

    41

    3.2.1.5

    1

    2

    Static

    GEOMGEOMGEOM

    GEOM

    SSTIFSSTIFSSTIF

    SSTIF

    ON

    NROPTNROPTNROPT

    NROPT

    NROPTANTO

    NROPTFNLL

    NROPTMODI

    NROPTINIT

  • ANSYS

    42

    3.2.1.6

    ,,,,,

    ANSYS

    ANSYS

    BKIN

    BISO

    MKIN

    MISO

    1BKIN

    Vonmises Von Mises

    MP

    Et

    2BIS0

    Von Mises BKIN

  • ANSYS

    43

    3MKIN

    Von Mises BKIN

    BKIN

    3.2.23.2.23.2.2

    3.2.2

    3.2.2.1

    3.2.2.2

    3.20}]{[}]{[ UKUM

    ][M ][K }{U }{U

    3.3)sin(}{}{ tU

    )sin(}{}{ 2 tU

  • ANSYS

    44

    3.4}0{}]){[]([ 2 MK

    3.4 i

    }{i

    ][M ][K

    3.2.2.3

    ANSYS

    Block Lanczos

    1 BlockBlockBlock

    Block

    LanczosLanczosLanczos

    Lanczos

    50000 ~ 100000

    2

  • ANSYS

    45

    ANSYS BEAM4 PIPE16 SPIN/

    3.2.2.4

    3.2.33.2.33.2.3

    3.2.3

    3.2.3.1

    3.2.3.2

    3.5)}({}]{[}]{[}]{[ tFUKUCUM

    ][M }{U ][C ][K }{U

    ANSYS)}({ tF

    (3.6)][][][ KMC

    (3.7)22

    i

    i

    CCS 0.02~0.05 0.03

    i

    i f 2 f

    3.2.3.3

  • ANSYS

    46

    t X(t)

    3.2.3.4

    1

    2

    3

    4

    5

  • ANSYS

    47

    444

    4

    ANSYS

    4.14.14.1

    4.1

    4.1.14.1.14.1.1

    4.1.1

    4-1

  • ANSYS

    48

    4-1

    4.1.24.1.24.1.2

    4.1.2

    ANSYSANSYSANSYS

    ANSYS

    ANSYS PIPE59

    ANSYS

    (1)

    (2)

    (3)

    (4)

    (5)

  • ANSYS

    49

    4.24.24.2

    4.2

    533.4mm 25.4mm

    2.1E11Pa 0.3 7850kg/m^3

    30m18m38m/s

    8m 7.4s

    1.93m/s1.47m/s 0.96m/s

    30T

    4.1

    26675 N

    ANSYS

    4.2.14.2.14.2.1

    4.2.1

    111

    1

    ANSYS/Multiphysics Utility Menu>File>Change

    Jobname,Drilling riser_1 New log and error filesyes

    OK 4-2/UNIT,SI

    4-2

    Utility Menu>File>Change Title,Analysis of

    Drilling riser_1

    mary

  • ANSYS

    50

    /FILNAME,Drilling riser_1,1 !/TITLE,Analysis of Drilling riser_1 !

    222

    2

    Main Menu>Preprocesso PREP7

    Main Menu>Preprocessor>Element Type>Add/Edit/Delete...,

    Element TypeAdd... 4-3Library of Element Types

    Pipe>Plast straight 20ApplyImmersed 59

    OK 4-4PIPE20 1 PIPE59

    2

    4-3

    4-4

    /PREP7 !ET,1,PIPE20 ! 1ET,2,PIPE59 ! 2

  • ANSYS

    51

    333

    3

    Main Menu>Preprocessor>Real Constants>Add/Edit/Delete...,

    Element Type for Real ConstantsAdd... 4-5

    Type 1 PIPE20OK 4-6Outer diameter

    0.5334Wall thickness0.0254 OKType 2 PIPE59

    OK 4-7 PIPE59

    4-5 4-6 PIPE20

    4-7 PIPE59

  • ANSYS

    52

    R,1,0.5334,0.0254 ! 1 PIPE20R,2,0.5334,0.0254,0.7,2.0,1030,0, ! 2 PIPE59

    444

    4

    Main Menu>Preprocessor>Material Props>Material Models,

    Define Material Model BehaviorStructural>Linear

    >Elastic>Isotropic2.1E110.3

    4-8 OKDensity7850

    4-9Fluids>Water Table 4-10

    58 4.3

    4-8 4-9

    4-10

    MP,EX,1,2.1E11 !MP,PRXY,1,0.3 !MP,DENS,1,7850 !

  • ANSYS

    53

    TBDE,WATE,1 !Water TableTB,WATE,1,,,0 !Water Table

    TBMODIF,1,1,2 ! StokesTBMODIF,1,2,0 !TBMODIF,1,3,30 !TBMODIF,1,4,1030 !TBMODIF,1,5,0 !TBMODIF,2,1,-30 !TBMODIF,2,2,0.96 !TBMODIF,2,3,0 !TBMODIF,2,4,-15 !TBMODIF,2,5,1.47 !TBMODIF,2,6,0 !TBMODIF,3,1,0 !TBMODIF,3,2,1.93 !TBMODIF,3,3,0 !TBMODIF,14,1,8 !TBMODIF,14,2,7.4 !TBMODIF,14,3,57 !

    555

    5

    Main Menu>Preprocessor>Modeling>Create>Keypoints>

    In Active Cs 4-11100

    18Apply 4.1 4-12

    4-11

    Main Menu>Preprocessor>Modeling>Create>Lines>Straight Lines

    Create Straight Lines 1 2

    Apply 2 3 3 4OK

  • ANSYS

    54

    4.1

    4-12

    K,1,0,0,18 ! 1K,2,0,0,0 ! 2K,3,0,0,-30 ! 3K,4,0,0,-33.2 ! 4LSTR,1,2 ! 1LSTR,2,3 ! 2LSTR,3,4 ! 3

    666

    6

    Utility Menu>PlotLinesPlotCtrls

    Numbering Line Numbers ONMain Menu>Preprocessor>

    Meshing>Mesh Attributes>Picked Lines,Lines Attributes

    L1 L2Assign Attributes to Picked Lines

    22 PIPE59Apply

    L311 PIPE20

    X Y Z

    2 0 0 0

    3 0 0 -30

    4 0 0 -33.2

  • ANSYS

    55

    OK

    Meshing>Size Cntrls>ManualSize>Lines>Picked Lines,

    L1 L2ApplyElement Sizes on

    Picked LinesElement edge length1Apply

    L3No.of element divisions5 1m 5

    OK

    Meshing>Mesh>LinesOKUtility Menu>

    PlotCtrlsStyle>Size and Shape Size and ShapeDisplay of

    elementOnOK 4-13

    4-13

    LSEL,S,LINE , ,1,2,1,, ! 12LATT,1,2,2 !LESIZE,ALL,1,,,,,, ! 12 1mLMESH,ALL ! 12 PIPE50ALLSEL !LSEL,S,LINE , ,3 ! 3LATT,1,1,1 !LESIZE,3, , ,5 ! 3 5LMESH,ALL ! 3 PIPE20ALLSEL !

    777

    7

  • ANSYS

    56

    SAVE DBUtility Menu>File

    Main Menu>Finish

    SAVE !FINISH !

    4.2.24.2.24.2.2

    4.2.2

    111

    1

    Main Menu>SolutionAnalysis Type

    >New AnalysisStatic 4-14

    OK

    4-14

    /SOLU !ANTYPE,0 !

    222

    2

    Main Menu>Solution>Define Loads>Apply>Structural

    >Displacement>On NodesApply UROT on Nodes

    4OK 4-14

    DOFs to be constrainedALL DOFApply

    1DOFs to be constrainedUXUY

    OK

  • ANSYS

    57

    4-14

    NSEL,S,LOC,Z,-33.2 ! Z=-33.2D,ALL,ALL !ALLSEL !NSEL,S,LOC,Z,18 ! Z=18D,ALL,UX ! XD,ALL,UY ! YALLSEL !

    333

    3

    1

    Main Menu>Solution>Define Loads>Apply>Structural>

    Force/Moment>On NodesApply F/M on NodesBox

    1 2OKApply F/M on

    NodesDirection of force/momentFX Force/moment value

    6675/17 17 4-15

    2

    Main Menu>Solution>Define Loads>Apply>Structural>

    Force/Moment>On Nodes, Apply F/M on Nodes

    1OKApply F/M on Nodes

    Direction of force/momentFZ Force/moment value-3E5

    OK

  • ANSYS

    58

    4-15

    3

    Main Menu>Solution>Define Loads>Apply>Structural>

    Inertia>Gravity>Global Apply (Gravitational) Acceleration

    ACELX ACELY ACELZ009.8 4-16

    Water Table

    4-17

    4-16

    4-17

  • ANSYS

    59

    NSEL,S,LOC,Z,1,17 ! Z=1 17F,ALL,FX, 6675/17 !XALLSEL !NSEL,S,LOC,Z,18 !F,ALL,FZ,-30E4 !ALLSEL !ACEL,0,0,9.8 !

    444

    4

    Main Menu>Solution>Solve>Current LS

    Solution is done

    Main Menu>Finish

    SOLVE !SAVE !FINISH !

    4.2.34.2.34.2.3

    4.2.3

    Main Menu>General Postproc

    111

    1

    Main Menu>General Postproc>Read ResultsLast Set

    222

    2

    1

    Main Menu>General Postproc>Plot Results>Deformed Shape

    4-18Def shape only 4-19

    2

    Main Menu>General Postproc>Plot Results>Contour Plot>Nodal Solu

    Contour Nodal Solution DataNodal Solution>DOF Solution

    >Displacement vector sumOK 4-20

    5mList

  • ANSYS

    60

    Main Menu>General Postproc>List Results>Nodal Solution

    List Nodal SolutionNodal Solution>DOF Solution>Displacement vect or

    sumOK 4-21

    0.37386m 7m

    4-18

    4-19

  • ANSYS

    61

    4-20

    4-21

    3

    Main Menu>General Postproc>Plot Results>Contour Plot>Element

    Solu Contour Element Solution DataElement Solution>Stress>

    von Mises stressOK 4-22

    Main Menu>General Postproc>Plot Results>Contour Plot>Element

    Solu Contour Element Solution DataElement Solution>Total Strain>

    von Mises total strainOK 4-23

  • ANSYS

    62

    4-22

    4-23

    4

    Main Menu>General Postproc>Element Table>Define Table

    Element Table DataAdd 4-24Lab

    MOMENT_I IItemComp

    By sequence numSMISC,

    SMISC,5 4-24ApplyLab

    MOMENT_J J ItemCompBy sequence

    numSMISC,

    SMISC,11OK

  • ANSYS

    63

    4-24

    Main Menu>General Postproc>Plot Results>Contour Plot>Line Ele m

    Res Plot Line-Element Results 4-25LabI

    MOMENT_ILabJMOMENT_J

    OK 4-26

    4-25

    4-26

  • ANSYS

    64

    /POST1 !SET,LAST !/ESHAPE,1.0 !PLDISP,0 !PLNSOL,U,SUM,0,1.0 !PLNSOL,S,EQV,0,1.0 !PLNSOL,EPTO,EQV,0,1.0 !ETABLE, MOMENT_I,SMISC,5 ! IETABLE, MOMENT_J,SMISC,11 ! JPLLS,MOMENT_I,MOMENT_J,1,0 !

    4.34.34.3

    4.3

    2STOKES

    4.3.14.3.14.3.1

    4.3.1

    0~360

    1

    2

    3

    4

    5

    4.3.24.3.24.3.2

    4.3.2

    111

    1

    222

    2

  • ANSYS

    65

    333

    3

    444

    4

    ANSYS APDL

    *DIM,WLX,ARRAY,361,1,1, , , !*DIM,WLFX,ARRAY,361,1,1, , , !*DO,I,0,360,1 ! 0~360*SET,WLX(I+1),I !WLX/PREP7 !TBDATA,81,I !Water Table/SOLU !TIME,1 !SOLVE !*GET,RFX,NODE,50,RF,FX ! X*SET,WLFX(I+1),-(RFX) !WLFX*ENDDO !*CREATE,ANSUO !*CFOPEN,'RFORCE','OUT','' !*VWRITE,WLX(1),WLFX(1), , , , , , , , !(3F15.4)

    *CFCLOS

    *END

    /INPUT, ANSUO

    555

    5

    4-27

    57

    4-27

  • ANSYS

    66

    4.44.44.4

    4.4

    ANSYS

    ANSYS APDL

    1 APDL

    !***********************************************************************************************

    !***********************************************************************************************

    /FILNAME,Drilling riser_1,1 !

    /TITLE,Analysis of Drilling riser_1 !

    !*******!*******!*******

    !*******

    Dwater=30 !

    H_wave=8 !

    T_wave=7.4 !

    V_surface=1.93 !

    V_middle=1.47 !

    V_buttom=0.96 !

    !!!

    !

    *********************

    *******

    OD=0.5334 !

    TW=0.0254 !

    !*******

    F_top=-3e5 !

    F_wind=6675 !

    !*******!*******!*******

    !*******

    /PREP7 !

    ET,1,PIPE20 ! 1

    ET,2,PIPE59 ! 2

    R,1,OD,TW ! 1 PIPE20

    R,2,OD,TW,0.7,2.0,1030,0, ! 2 PIPE59

  • ANSYS

    67

    MP,EX,1,2.1E11 !

    MP,PRXY,1,0.3 !

    MP,DENS,1,7850 !

    TBDE,WATE,1 !Water Table

    TB,WATE,1,,,0 !Water Table

    TBMODIF,1,1,2 ! Stokes

    TBMODIF,1,2,0 !

    TBMODIF,1,3,Dwater !

    TBMODIF,1,4,1030 !

    TBMODIF,1,5,0 !

    TBMODIF,2,1,-Dwater !

    TBMODIF,2,2,V_buttom !

    TBMODIF,2,3,0 !

    TBMODIF,2,4,- Dwater/2 !

    TBMODIF,2,5,V_middle !

    TBMODIF,2,6,0 !

    TBMODIF,3,1,0 !

    TBMODIF,3,2,V_surface !

    TBMODIF,3,3,0 !

    TBMODIF,14,1,H_wave !

    TBMODIF,14,2,T_wave !

    TBMODIF,14,3,57 !

    !*******

    CSYS,0 !

    K,1,0,0,18 ! 1

    K,2,0,0,0 ! 2

    K,3,0,0,-30 ! 3

    K,4,0,0,-33.2 ! 4

    LSTR,1,2 ! 1

    LSTR,2,3 ! 2

    LSTR,3,4 ! 3

    LSEL,S,LINE , ,1,2,1,, ! 12

    LATT,1,2,2 !

    LESIZE,ALL,1,,,,,, ! 12 1m

    LMESH,ALL ! 12 PIPE50

    ALLSEL !

  • ANSYS

    68

    LSEL,S,LINE , ,3 ! 3

    LATT,1,1,1 !

    LESIZE,3, , ,5 ! 3 5

    LMESH,ALL ! 3 PIPE20

    ALLSEL !

    SAVE !

    FINISH !

    !*******!*******!*******

    !*******

    /SOLU !

    ANTYPE,0 !

    NSEL,S,LOC,Z,-33.2 ! Z=-33.2

    D,ALL,ALL !

    ALLSEL !

    NSEL,S,LOC,Z,18 ! Z=18

    D,ALL,UX ! X

    D,ALL,UY ! Y

    ALLSEL !

    NSEL,S,LOC,Z,1,17 ! Z=1 17

    F,ALL,FX, F_wind/17 !X

    ALLSEL !

    NSEL,S,LOC,Z,18 !

    F,ALL,FZ,F_top !

    ALLSEL !

    ACEL,0,0,9.8 !

    SOLVE !

    SAVE !

    FINISH !

    !*******!*******!*******

    !*******

    /POST1 !

    SET,LAST !

    /ESHAPE,1.0 !

    PLDISP,0 !

    PLNSOL,U,SUM,0,1.0 !

    PLNSOL,S,EQV,0,1.0 !

    PLNSOL,EPTO,EQV,0,1.0 !

    ETABLE, MOMENT_I,SMISC,5 ! I

  • ANSYS

    69

    ETABLE, MOMENT_J,SMISC,11 ! J

    PLLS,MOMENT_I,MOMENT_J,1,0 !

    !******!******!******

    !******

    !

    /PREP7

    D,50,ALL

    ACEL,0,0,9.8

    *DIM,WLX,ARRAY,361,1,1, , , !

    *DIM,WLFX,ARRAY,361,1,1, , , !

    *DO,I,0,360,1 ! 0~360

    *SET,WLX(I+1),I !WLX

    /PREP7 !

    TBDATA,81,I !Water Table

    /SOLU !

    TIME,1 !

    SOLVE !

    *GET,RFX,NODE,50,RF,FX ! X

    *SET,WLFX(I+1),-(RFX) !WLFX

    *ENDDO !

    *CREATE,ANSUO !

    *CFOPEN,'RFORCE','OUT','' !

    *VWRITE,WLX(1),WLFX(1), , , , , , , , !

    (3F15.4) !

    *CFCLOS

    *END

    /INPUT, ANSUO

  • ANSYS

    70

    555

    5

    P-y P-y ANSYS

    P-y

    P-y ANSYS

    5.15.15.1

    5.1

    (5.1)0),(4

    4

    yxbpdx

    yd

    EI

    ),( yxp y xEI b

  • ANSYS

    71

    Winkler Py

    5.25.25.2

    5.2

    PPP

    P

    yyy

    y

    PyH X P Y

    p-y-- p-yMatlockReeseWelch p-yp-y

    (1) Py p-y

    (2) Py

    (3) p-yp-yp-y

    P y Py

    5.2.15.2.15.2.1

    5.2.1

    PPP

    P

    yyy

    y

    1u

    P

    R

    x

    R

    x

    R

    x

    R

    x

  • ANSYS

    72

    (5.2)

    J

    C

    D

    D

    x

    u

    R

    6

    mmD

    MN/m3

    kPau

    C

    0.250.5J

    x u

    P

    5.3)(9

    )0(3

    Ruu

    R

    u

    uu

    xxCP

    xx

    D

    xC

    JxCP

    2Py

    5-1 Py

    OCDEF Py 8/0 C

    yy

    5.43

    1

    5.0

    Cu

    y

    y

    P

    P

    5-1 Py

    8/ C

    yy

    u

    PP C

    y

    1/2DyC 05.2 0

    OCDHI OCDG R

    xx R

    xx

  • ANSYS

    73

    5.2.25.2.25.2.2

    5.2.2

    PPP

    P

    yyy

    y

    1u

    P

    R

    x

    5.51

    23 )(

    C

    DCC

    x

    R

    5-2 1C 2C 3C D

    5-2 C1C2C3

    R

    xx u

    P

    5.6)(

    )()(

    3

    21

    Ru

    Ru

    xxxDCP

    xxxDCxCP

    2Py

    Pyx

    5.7

    y

    AP

    kx

    APP

    u

    u

    tanh

    A 9.0A

    5-39.08.00.3

    D

    x

    A k

  • ANSYS

    74

    5-3

    5.2.35.2.35.2.3

    5.2.3

    PPP

    P

    yyy

    y

    90kPau

    C

    u

    P

    u

    C8u

    C12u

    P

    Py

    Py

    5.35.35.3

    5.3

    P-yP-yP-y

    P-y

    ANSYSANSYSANSYS

    ANSYS

    ANSYS COMBIN39 F-D P-y P y COMBIN39 P-y ANSYS

    COMBIN39 P-y

    1 P-y

    2

    3 COMBIN39

  • ANSYS

    75

    4 P-y COMBIN39 F-D

    5

    5.45.45.4

    5.4

    5-4

    ANSYS

    5-4

    1524mm 54mm

    2.1E11Pa 0.3 7850kg/m^3

    28m15m46m/s

    13.8m 10s

    1.73m/s1.37 m/s 0.95 m/s

    200T

    P-y 5.1

  • ANSYS

    76

    5.1 P-y

    ANSYS

    5.4.15.4.15.4.1

    5.4.1

    111

    1

    ANSYS/Multiphysics Utility Menu>File>Change

    Jobname,Pile-soil interactionNew log and error files

    yes OK /UNIT,SIUtility Menu

    >File>Change Title,Analysis of Pile-soil interaction

    222

    2

    Main Menu>Preprocesso PREP7

    Main Menu>Preprocessor>Element Type>Add/Edit/Delete...

    3

    ET,1,PIPE16 ! 1 PIPE16

    ET,2,PIPE59 ! 2 PIPE59

    ET,3,COMBIN39 ! 3 COMBIN39

    m P-yPN/ym

    00 1050.756 1751.26 2626.89 3677.646 4553.276

    0 0.001524 0.006096 0.024384 0.06096 0.12192

    10 3677.646 5954.284 9456.804 12784.2 16111.59

    0 0.01524 0.06096 0.24384 0.6096 1.2192

    20 5253.78 10507.56 15761.34 18213.1 20839.99

    0 0.000762 0.001778 0.002794 0.003556 0.004318

    30 17862.852 35725.704 53588.56 62344.86 71276.28

    0 0.00127 0.002794 0.004826 0.005842 0.00762

    40 38177.468 76354.936 114357.3 133446 152534.7

    0 0.002032 0.004064 0.006604 0.008128 0.010414

    50 64971.746 130118.62 195090.4 227663.8 260062.1

    0 0.00254 0.00508 0.008382 0.010414 0.013208

  • ANSYS

    77

    333

    3

    Main Menu>Preprocessor>Real Constants>Add/Edit/Delete...,

    Element Type for Real ConstantsAdd...

    R,1,1.524,0.05 ! 1 PIPE16

    R,2,1.524,0.05, 0.7,2.0,1030,0, ! 2 PIPE59

    1 PIPE16 2 PIPE59 21

    COMBIN39Main Menu>Preprocessor>Real Constants>

    Add/Edit/Delete...,Element Type for Real ConstantsAdd... Type 3

    COMBIN39OK 5-5D-F

    P-yD P-yyFP

    ApplyD-F 21 21

    5-5 COMBIN39

    444

    4

    Main Menu>Preprocessor>Material Props>Material Models,

    Define Material Model BehaviorStructural>Linear

    >Elastic>Isotropic2.1E110.3

    OKDensity7850Fluids>

    Water Table 5-6

  • ANSYS

    78

    5-6

    555

    5

    1

    Main Menu>Preprocessor>Modeling>Create>Nodes>In Acti ve Cs

    5-710015

    Apply4400-28

    Apply6400-48

    20mOKCreate>Nodes>Fill between Nds

    1 44OK

    5-8Apply 44 64

    5-9

    COMBIN396510

    -28 8510-48

    N,1,0,0,15 ! 1

    N,44,0,0,-28 ! 44

    FILL ! 1 44 2~43

    N,64,0,0,-48 ! 64

    FILL ! 44 64 45~63

    N,65,1,0,-28 ! 65

    N,85,1,0,-48 ! 85

    FILL ! 65 85 66~84

  • ANSYS

    79

    5-7

    5-8

    5-9

    2

    Main Menu>Preprocessor>Modeling>Create>Elements

    >Elem Attributes Element AttributesTYPE2

    PIPE59MAT1REAL2

    OKMain Menu>Preprocessor>Modeling>Create>

    Elements>Auto Numbered>Thru Nodes

  • ANSYS

    80

    1 2Apply 2 33 443 44

    OK

    5-10

    TYPE,2 ! 2

    REAL,2 ! 2

    MAT,1 ! 1

    *DO,I,1,43,1

    E,I,I+1

    *ENDDO ! PIPE59

    TYPE,1 ! 1

    REAL,1 ! 1

    MAT,1 ! 1

    *DO,I,44,63,1

    E,I,I+1

    *ENDDO ! PIPE16

    TYPE,3 ! 3

    *DO,I,3,23,1

    REAL,I ! I

    E,I+41I+62 !

    *ENDDO

  • ANSYS

    81

    5-10

    666

    6

    SAVE DBUtility Menu>File

    Main Menu>Finish

    5.4.25.4.25.4.2

    5.4.2

    111

    1

    Main Menu>SolutionAnalysis Type

    >NewAnalysisStaticOK

    222

    2

    Main Menu>Solution>Define Loads>Apply>Structural

    >Displacement>On NodesApply UROT on Nodes

    OKDOFs

    to be constrainedALL DOFOK

    /SOLU !

    ANTYPE,0 !

    NSEL,S,NODE,,64,85,1 ! 64~85

    D,ALL,ALL !

    ALLSEL !

    333

    3

    1

    Main Menu>Solution>Define Loads>Apply>Structural>

    Force/Moment>On NodesApply F/M on NodesBox

    116OK Apply F/M on Nodes

    Direction of force/momentFXForce/moment value

    23288/16 16OK

    2

    Main Menu>Solution>Define Loads>Apply>Structural>

    Force/Moment>On Nodes, Apply F/M on Nodes

  • ANSYS

    82

    1OKApply F/M on NodesDirection of

    force/momentFZForce/moment value-2E6OK

    3

    Main Menu>Solution>Define Loads>Apply>Structural>

    Inertia>Gravity>Global Apply (Gravitational) Acceleration

    ACELX ACELY ACELZ009.8 4-16

    Water Table

    444

    4

    Main Menu>Solution>Solve>Current LS

    Solution is done

    Main Menu>Finish

    NSEL,S,NODE, ,1,16,1 ! Z=1 17F,ALL,FX,23288/16 !XALLSEL !F,1,FZ,-2E6 !ACEL,0,0,9.8 !SOLVE !SAVE !FINISH

    555

    5

    1

    Main Menu>General Postproc>Read ResultsLast Set

    2

    Main Menu>General Postproc>Plot Results>Deformed Shape

    Def shape only 5-11

  • ANSYS

    83

    5-11

    3

    Main Menu>General Postproc>Plot Results>Contour Plot>Nodal

    Solu Contour Nodal Solution DataNodal Solution>DOF Solution

    >Displacement vector sumOK 5-12

    1.581m

    5-12

    4

    Main Menu>General Postproc>Plot Results>Contour Plot>Element

    Solu Contour Element Solution DataElement Solution>Stress>

  • ANSYS

    84

    von Mises stressOK 5-13

    5-13

    4

    ANSYS

    Main Menu>General Postproc>Element Table>Define Table

    Element Table DataAddLab

    MOMENT_I IItemCompBy sequence

    numSMISC,

    SMISC,5ApplyLabMOMENT_J

    JItemCompBy sequence num

    SMISC,SMISC,11Apply

    LabSTRESS_I

    IItemCompBy sequence num

    NMISC,NMISC,15Apply

    LabSTRESS _J JItem

    CompBy sequence numNMISC,

    NMISC,55OK

    Main Menu>General Postproc>Plot Results>Contour Plot>Line Ele m

    Res Plot Line-Element ResultsLabIMOMENT_I

  • ANSYS

    85

    LabJMOMENT_JOK

    5-14

    5-14

    5

    Main Menu>General Postproc>Element Table>List Elem Table

    5-15MOMENT_IMOMENT_JSTRESS_I

    STRESS_JOK 5.5

    5-15

    5.2 N*mPa

    ELEMELEMELEM

    ELEM

    MOMENT_IMOMENT_IMOMENT_I

    MOMENT_I

    MOMENT_JMOMENT_JMOMENT_J

    MOMENT_J

    STRESS_ISTRESS_ISTRESS_I

    STRESS_I

    STRESS_JSTRESS_JSTRESS_J

    STRESS_J

    43 -0.17973E+08 -0.18720E+08 0.21166E+09 0.22011E+09

    44 -0.18720E+08 -0.19466E+08 0.22011E+09 0.22861E+09

    45 -0.19466E+08 -0.20206E+08 0.22861E+09 0.23704E+09

    46 -0.20206E+08 -0.20919E+08 0.23704E+09 0.24517E+09

    47 -0.20919E+08 -0.21544E+08 0.24517E+09 0.25231E+09

    48 -0.21544E+08 -0.21980E+08 0.25231E+09 0.25731E+09

  • ANSYS

    86

    /POST1 !SET,LAST !/ESHAPE,1.0 !PLDISP,0 !PLNSOL,U,SUM,0,1.0 !PLNSOL,S,EQV,0,1.0 !PLNSOL,EPTO,EQV,0,1.0 !ETABLE,MOMENT_I,SMISC,5 ! IETABLE,MOMENT_J,SMISC,11 ! JETABLE,STRESS_I,NMISC,15 ! IETABLE,STRESS_J,NMISC,55 ! JPLLS,MOMENT_I,MOMENT_J,1,0 !PRETAB,MOMENT_I,MOMENT_J,STRESS_I, STRESS_J !FINISH

    5.4.35.4.35.4.3

    5.4.3

    111

    1

    ANSYS

    Main Menu>Preprocessor>Element Type>Add/Edit/Delete,Element Type

    AddMASS21 4R,24,,,2E5

    Main Menu>Preprocessor>Modeling>Create>Elements

    >Elem Attributes4 MASS2124

    49 -0.21980E+08 -0.22094E+08 0.25731E+09 0.25868E+09

    50 -0.22094E+08 -0.22080E+08 0.25868E+09 0.25859E+09

    51 -0.22080E+08 -0.21928E+08 0.25859E+09 0.25696E+09

    52 -0.21928E+08 -0.21632E+08 0.25696E+09 0.25369E+09

    53 -0.21632E+08 -0.19846E+08 0.25369E+09 0.23360E+09

    54 -0.19846E+08 -0.17012E+08 0.23360E+09 0.20165E+09

    55 -0.17012E+08 -0.13671E+08 0.20165E+09 0.16398E+09

    56 -0.13671E+08 -0.10362E+08 0.16398E+09 0.12668E+09

    57 -0.10362E+08 -0.74925E+07 0.12668E+09 0.94341E+08

    58 -0.74925E+07 -0.49201E+07 0.94341E+08 0.65358E+08

    59 -0.49201E+07 -0.26916E+07 0.65358E+08 0.40259E+08

    60 -0.26916E+07 -0.78057E+06 0.40259E+08 0.18747E+08

    61 -0.78057E+06 0.87876E+06 0.18747E+08 78701.

    62 0.87876E+06 0.22536E+07 78701. 0.15376E+08

    63 0.22536E+07 0.35114E+07 0.15376E+08 0.29509E+08

  • ANSYS

    87

    OKMain Menu>Preprocessor>Modeling>Create>

    Elements>Auto Numbered>Thru Nodes

    OK

    ET,4,MASS21 ! 4MASS21R,24,,,2E5 ! 24MASS21TYPE,4 ! 4REAL,24 ! 24E,1 ! 1MASS21

    222

    2

    X ROTY

    Main Menu>Solution>Define Loads>Apply>Structural

    >Displacement>On NodesApply UROT on Nodes

    OKDOFs

    to be constrainedALL DOFApplyOK

    DOFs to be constrainedUY,UZ,ROTX,ROTZOK

    ALLSEL !NSEL,S,NODE,,64,85,1 ! 64~85D,ALL,ALL !ALLSEL !D,1,UY,,,63,1,UZ,ROTX,ROTZ ! 1~63 UX ROTYALLSEL !ACEL,0,0,9.8 !

    333

    3

    ANSYSMain Menu>Solution>Analysis Type>

    NewAnalysisModal

    444

    4

    Main Menu>Solution>Analysis Type>Analysis Option Modal

    AnalysisBlock Lanzcos6

    555

    5

    Main Menu>Solution>Load Step Opts>ExpansionPass>Single Expand

    >Expand Modes Expand Nodes6

  • ANSYS

    88

    666

    6

    Main Menu>Solution>Solve>Current LS Solve Current Load Step

    OKNoteSolution is done

    Close

    /SOLU !

    ANTYPE,MODAL !

    MODOPT,LANB,6 !

    MXPAND,6 ! 6

    SOLVE !

    SAVE !

    FINISH !

    777

    7

    1

    POST1Main Menu>General Postproc>Results

    Summary 5.3

    5.3

    2

    Main Menu>General Postproc>Read Results>First Set 1

    3

    Main Menu>General Postproc>Plot Results>Deforme Shape

    5-16

    Utility Menu>PlotCtrls>Style>Size and Shape

    Szie and ShapeDisplay of element shapes based on real constant descriptions

    5-17 5-21

    Hz 0.4726 2.6982 7.1816 13.841 22.667 32.716

  • ANSYS

    89

    5-16 5-17

    5-18 5-19

    5-20 5-21

    /POST1 !

    ESHAPE,1.0 !

    SET,LIST !

    SET,FIRST !

    PLDISP,0 !

    SET,NEXT !

  • ANSYS

    90

    PLDISP,0 !

    SET,NEXT !

    PLDISP,0 !

    SET,NEXT !

    PLDISP,0 !

    SET,NEXT !

    PLDISP,0 !

    SET,NEXT !

    PLDISP,0 !

    FINISH !

    5.55.55.5

    5.5

    P-y

    ANSYS

    2 APDL

    !************************************************************************************************

    !************************************************************************************************

    /FILNAME,Drilling riser_1,1 !/TITLE,Analysis of Drilling riser_1 !!*******!*******!*******

    !*******

    Dwater=28 !H_wave=13.8 !T_wave=10 !V_surface=1.73 !V_middle=1.37 !V_buttom=0.95 !!!!

    !

    *********************

    *******

    OD=1.524 !TW=0.054 !!*******F_top=-2e6 !F_wind= 23288 !

    !*******!*******!*******

    !*******

    /PREP7 !

  • ANSYS

    91

    ET,1,PIPE16 ! 1

    ET,2,PIPE59 ! 2

    ET,3,COMBIN39 ! 3

    R,1,OD,TW ! 1 PIPE16

    R,2,OD,TW,0.7,2.0,1030,0, ! 2 PIPE59

    !********* 3~23 COMBIN39

    R,3,0,0,0.001524,1050.756,0.006096,1751.26

    RMORE,0.024384,2626.89,0.06096,3677.646,0.12192,4553.276

    RMORE,0.18288,5253.78,0.48768,3152.268,0.914146,0

    RMORE,1.218946,0,,,,,

    R,4,0,0,0.01524,3677.646,0.06096,5954.284

    RMORE,0.24384,9456.804,0.6096,12784.198,1.2192,16111.592

    RMORE,1.8288,18563.356,4.8768,13659.828,9.14146,7005.04

    RMORE,12.18946,7005.04,,,,,

    R,5,0,0,0.000762,5253.78,0.001778,10507.56

    RMORE,0.002794,15761.34,0.003556,18213.104,0.004318,20839.994

    RMORE,0.005842,23466.884,0.007366,24867.892,0.010414,25918.648

    RMORE,1.218946,26093.774,,,,,

    R,6,0,0,0.00127,17862.852,0.002794,35725.704

    RMORE,0.004826,53588.556,0.005842,62344.856,0.00762,71276.282

    RMORE,0.01016,80207.708,0.012446,84760.984,0.018034,88263.504

    RMORE,1.218946,89139.134,,,,,

    R,7,0,0,0.002032,38177.468,0.004064,76354.936

    RMORE,0.006604,114357.278,0.008128,133446.012,0.010414,152534.746

    RMORE,0.01397,171623.48,0.017272,181080.284,0.025146,188785.828

    RMORE,1.218946,190712.214,,,,,

    R,8,0,0,0.00254,64971.746,0.00508,130118.618

    RMORE,0.008382,195090.364,0.010414,227663.8,0.013208,260062.11

    RMORE,0.01778,292635.546,0.022098,308922.264,0.03175,321881.588

    RMORE,1.218946,325033.856,,,,,

    R,9,0,0,0.000762,36251.082,0.003048,57441.328

    RMORE,0.012192,91240.646,0.03048,123814.082,0.06096,156037.266

    RMORE,0.09144,178628.52,0.24384,158138.778,0.4572,129242.988

    RMORE,0.6096,129242.988,,,,,

    R,10,0,0,0.000762,43431.248,0.003048,68999.644

    RMORE,0.012192,109628.876,0.03048,148681.974,0.06096,187384.82

  • ANSYS

    92

    RMORE,0.09144,214529.35,0.24384,199118.262,0.4572,177752.89

    RMORE,0.6096,177752.89,,,,,

    R,11,0,0,0.000762,52537.8,0.003048,83359.976

    RMORE,0.012192,132395.256,0.03048,179679.276,0.06096,226262.792

    RMORE,0.09144,259011.354,0.24384,253232.196,0.4572,245001.274

    RMORE,0.6096,245001.274,,,,,

    R,12,0,0,0.002032,388604.594,0.004318,777034.062

    RMORE,0.007112,1165638.656,0.00889,1359853.39,0.011176,1554243.25

    RMORE,0.01524,1748457.984,0.018796,1845477.788,0.027178,1923233.732

    RMORE,1.218946,1942672.718,,,,,

    R,13,0,0,0.002286,473015.326,0.004826,946030.652

    RMORE,0.007874,1419045.978,0.009906,1655466.078,0.012446,1892061.304

    RMORE,0.016764,2128481.404,0.020828,2246691.454,0.029972,2341259.494

    RMORE,1.218946,2364901.504,,,,,

    R,14,0,0,0.00254,622222.678,0.005588,1244620.482

    RMORE,0.009144,1866843.16,0.011176,2178042.062,0.014224,2489240.964

    RMORE,0.01905,2800439.866,0.023876,2955951.754,0.034544,3080466.34

    RMORE,1.218946,3111463.642,,,,,

    R,15,0,0,0.003302,925015.532,0.006858,1850206.19

    RMORE,0.010922,2775221.722,0.013716,3237729.488,0.017526,3700237.254

    RMORE,0.023368,4162920.146,0.02921,4394086.466,0.042164,4579194.648

    RMORE,1.218946,4625427.912,,,,,

    R,16,0,0,0.003556,1173694.452,0.00762,2347564.03

    RMORE,0.012446,3521258.482,0.015494,4108105.708,0.019558,4695128.06

    RMORE,0.026416,5281975.286,0.032766,5575311.336,0.047498,5810155.302

    RMORE,1.218946,5868822.512,,,,,

    R,17,0,0,0.004826,771079.778,0.009906,1541984.43

    RMORE,0.016256,2313064.208,0.02032,2698516.534,0.025908,3083968.86

    RMORE,0.034544,3469596.312,0.042926,3662234.912,0.06223,3816520.918

    RMORE,1.218946,3855048.638,,,,,

    R,18,0,0,0.00508,928868.304,0.010922,1857911.734

    RMORE,0.01778,2786780.038,0.022098,3251214.19,0.028194,3715648.342

    RMORE,0.037592,4180082.494,0.04699,4412474.696,0.067818,4598108.256

    RMORE,1.218946,4644691.772,,,,,

    R,19,0,0,0.00508,1017657.186,0.010922,2035489.498

    RMORE,0.01778,3053146.684,0.022098,3562062.84,0.028194,4070978.996

  • ANSYS

    93

    RMORE,0.037592,4579720.026,0.04699,4834178.104,0.067818,5037674.516

    RMORE,1.218946,5088636.182,,,,,

    R,20,0,0,0.00508,1133765.724,0.010922,2267531.448

    RMORE,0.01778,3401122.046,0.022098,3968004.908,0.028194,4534887.77

    RMORE,0.037592,5101770.632,0.04699,5385299.626,0.067818,5611912.67

    RMORE,1.218946,5668653.494,,,,,

    R,21,0,0,0.004826,2153874.674,0.01016,4307749.348

    RMORE,0.01651,6461624.022,0.020828,7538473.796,0.026416,8615498.696

    RMORE,0.035306,9692348.47,0.043942,10230860.92,0.0635,10661670.88

    RMORE,1.218946,10769373.37,,,,,

    R,22,0,0,0.004826,2413586.532,0.01016,4826997.938

    RMORE,0.01651,7240584.47,0.020828,8447377.736,0.026416,9654171.002

    RMORE,0.035306,10860964.27,0.043942,11464273.34,0.0635,11946920.59

    RMORE,1.218946,12067582.41,,,,,

    R,23,0,0,0.004826,2662790.83,0.01016,5325581.66

    RMORE,0.01651,7988372.49,0.020828,9319855.468,0.026416,10651338.45

    RMORE,0.035306,11982646.3,0.043942,12648300.22,0.0635,13181033.52

    RMORE,1.218946,13314129.28,,,,,

    !******

    MP,EX,1,2.1E11 !

    MP,PRXY,1,0.3 !

    MP,DENS,1,7850 !

    !******

    TBDE,WATE,1 !Water Table

    TB,WATE,1,,,0 !Water Table

    TBMODIF,1,1,2 ! Stokes

    TBMODIF,1,2,0 !

    TBMODIF,1,3,Dwater !

    TBMODIF,1,4,1030 !

    TBMODIF,1,5,0 !

    TBMODIF,2,1,-Dwater !

    TBMODIF,2,2,V_buttom !

    TBMODIF,2,3,0 !

    TBMODIF,2,4,- Dwater/2 !

    TBMODIF,2,5,V_middle !

    TBMODIF,2,6,0 !

  • ANSYS

    94

    TBMODIF,3,1,0 !

    TBMODIF,3,2,V_surface !

    TBMODIF,3,3,0 !

    TBMODIF,14,1,H_wave !

    TBMODIF,14,2,T_wave !

    TBMODIF,14,3,41 !

    !*******

    N,1,0,0,15 ! 1

    N,44,0,0,-28 ! 44

    FILL ! 1 44 2~43

    N,64,0,0,-48 ! 64

    FILL ! 44 64 45~63

    N,65,1,0,-28 ! 65

    N,85,1,0,-48 ! 85

    FILL ! 65 85 66~84

    TYPE,2 ! 2

    REAL,2 ! 2

    MAT,1 ! 1

    *DO,I,1,43,1

    E,I,I+1 ! PIPE59

    *ENDDO

    TYPE,1 ! 1

    REAL,1 ! 1

    MAT,1 ! 1

    *DO,I,44,63,1

    E,I,I+1 ! PIPE16

    *ENDDO

    TYPE,3 ! 3

    *DO,I,3,23,1

    REAL,I ! I

    E,I+41I+62 !

    *ENDDO

    !*******!*******!*******

    !*******

    /SOLU !

    ANTYPE,0 !

    NSEL,S,NODE,,64,85,1 ! 64~85

  • ANSYS

    95

    D,ALL,ALL !

    ALLSEL !

    NSEL,S,NODE, ,1,16,1 ! Z=1 17

    F,ALL,FX,F_wind/16 !X

    ALLSEL !

    F,1,FZ,F_top !

    ACEL,0,0,9.8 !

    SOLVE !

    SAVE !

    FINISH

    !*******!*******!*******

    !*******

    /POST1 !

    SET,LAST !

    /ESHAPE,1.0 !

    PLDISP,0 !

    PLNSOL,U,SUM,0,1.0 !

    PLNSOL,S,EQV,0,1.0 !

    PLNSOL,EPTO,EQV,0,1.0 !

    ETABLE,MOMENT_I,SMISC,5 ! I

    ETABLE,MOMENT_J,SMISC,11 ! J

    ETABLE,STRESS_I,NMISC,15 ! I

    ETABLE,STRESS_J,NMISC,55 ! J

    PLLS,MOMENT_I,MOMENT_J,1,0 !

    PRETAB,MOMENT_I,MOMENT_J,STRESS_I, STRESS_J !

    FINISH

    !********!********!********

    !********

    /PREP7

    ET,4,MASS21 ! 4MASS21

    R,24,,,2E5 ! 24MASS21

    TYPE,4 ! 4

    REAL,24 ! 24

    E,1 ! 1MASS21

    ALLSEL !

    NSEL,S,NODE,,64,85,1 ! 64~85

    D,ALL,ALL !

    ALLSEL !

  • ANSYS

    96

    D,1,UY,,,63,1,UZ,ROTX,ROTZ ! 1~63 UX ROTY

    ALLSEL !

    ACEL,0,0,9.8 !

    /SOLU !

    ANTYPE,MODAL !

    MODOPT,LANB,6 !

    MXPAND,6 ! 6

    SOLVE !

    SAVE !

    FINISH !

    /POST1 !

    ESHAPE,1.0 !

    SET,LIST !

    SET,FIRST !

    PLDISP,0 !

    SET,NEXT !

    PLDISP,0 !

    SET,NEXT !

    PLDISP,0 !

    SET,NEXT !

    PLDISP,0 !

    SET,NEXT !

    PLDISP,0 !

    SET,NEXT !

    PLDISP,0 !

    FINISH !

  • ANSYS

    97

    666

    6

    ANSYS

    6.16.16.1

    6.1

    6-1

    6-1

  • ANSYS

    98

    6.26.26.2

    6.2

    6-2

    6-2

    24 1 in in

    13.375 10.9 in mm

    3.0E10 0.227 Pa MPa

    2.1E11 0.3 Pa

    X52 360 MPa

    J55 379 MPa

    25 25 50mm m

  • ANSYS

    99

    30t

    6.2.16.2.16.2.1

    6.2.1

    hdh

    hdh 0.2m

    hdh 5m

    ANSYS

    HognestadANSYSMISO

    ANSYS

    6.2.26.2.26.2.2

    6.2.2

    111

    1

    ANSYS/MultiphysicsUtility Menu>File>Change Jobname,

    Drilinng_mixstructualNew log and error filesyes

    OKUtility Menu>File>Change Title,

    Analysis of Drilinng_mixstructual

    /FILNAME,Drilling_mixstructual,1

    /TITLE,Analysis of Drilling_mixstructual

    222

    2

    Main Menu>Preprocessor PREP7

    Main Menu>Preprocessor>Element Type

    >Add/Edit/Delete,Element TypeAdd 6-3

  • ANSYS

    100

    Shell>Plastic 4node 43, Apply SOLID45

    6-3

    /PREP7 !

    ET,1,SOLID45 ! 1 SOLID45

    ET,2,SHELL43 ! 2 SHELL43

    333

    3

    Main Menu>Preprocessor>Real Constants>Add/Edit/Delete

    Element Type for Real ConstantsAdd Type 1 SHELL43

    OK 6-4, Shell thickness at IJKL

    1*0.0254 6-5ApplyReal Constant Set No.

    2Shell thickness at IJKL10.9E-3OK

    6-4 SHELL43

  • ANSYS

    101

    R,1,0.0254

    R,2,0.0109

    444

    4

    1

    Main Menu>Preprocessor>Material Props>Material Models

    Define Material Model BehaviorStructural>Linear>

    Elastic>IsotropicEX3.0E10

    PRXY0.2 6-5Structural>Nonlinear>

    Inelastic>Rate Independent>Isotropic Mardening Plasticity>Mises Plasticity>Multilinear

    Stress-Strain 6-6Grahp

    6-7Structural>DensityDENS

    2000

    6-5

    6-6

  • ANSYS

    102

    6-7

    2

    Define Material Model BehaviorMaterial>New Model

    2OKStructural>

    Nonlinear>Inelastic>Rate Independent>Isotropic Mardening Plasticity>Mises Plasticity>

    BilinearNote

    EX2.1E11PRXY0.3

    OK 6-8Yield Stss

    360E6Tang Mod0

    Graph 6-9

    Structural>DensityDENS7850

    6-7

  • ANSYS

    103

    6-8

    3

    Define Material Model BehaviorMaterial>New Model

    3OKStructural>

    Nonlinear>Inelastic>Rate Independent>Isotropic Mardening Plasticity>Mises Plasticity>

    BilinearNote

    EX2.1E11PRXY0.3

    OK 6-8Yield Stss

    379E6Tang Mod0Structural>Density

    DENS7850

    6-10

    6-10

    MP,EX,1,3E10 ! 1

  • ANSYS

    104

    MP,PRXY,1,0.2

    MP,DENS,1,2000

    TB,MISO,1,1,5, !

    TBTEMP,0 ! 2

    TBPT,,0.0005,15E6

    TBPT,,0.001,21E6

    TBPT,,0.0015,24E6

    TBPT,,0.002,27E6

    TBPT,,0.003,24E6

    MP,EX,2,2.1E11 !

    MP,PRXY,2,0.3

    MP,DENS,2,7850

    TB,BKIN,2,1 !

    TBTEMP,0

    TBDATA,1,360E6,0 !

    MP,EX,3,2.1E11 ! 3

    MP,PRXY,3,0.3

    MP,DENS,3,7850

    TB,BKIN,3,1 !

    TBTEMP,0

    TBDATA,1,379E6,0 !

    555

    5

    Workplane>Change Active CS to>Global Cylindrical 6-10

    6-11

  • ANSYS

    105

    1

    Main Menu>Preprocessor>Modeling>Create>Keypoints>

    In Active Cs 6.1

    6.1

    0.304824*0.0254/2,0.169813.375*0.0254/2

    Main Menu>Preprocessor>Modeling>Create>Lines>Straight

    Line 3 4Apply

    4 56 77 89 1010 1112 13 13 14OK

    6-12 PlotCtrls>NumberingLine numbers

    On

    2)

    Main Menu>Preprocessor>Meshing>Size Cntrls>ManualSize

    Lines>Picked LinesOK

    Element Sizes on Picked LinesSIZE1

    1mOK

    Main Menu>Preprocessor>Modeling>Operate>Extrude Lines>

    X Y Z

    1 0 0 0

    2 0 0 55

    3 0.3048 0 0

    4 0.3048 0 30

    5 0.3048 0 55

    6 0.3048 180 0

    7 0.3048 180 30

    8 0.3048 180 55

    9 0.3048 0 0

    10 0.1698 0 30

    11 0.1698 0 55

    12 0.1698 180 0

    13 0.1698 180 30

    14 0.1698 180 55

  • ANSYS

    106

    About Axis L1

    L2OK

    1 2OK 6-13

    6-12

    6-13

    Arc Length in degrees180 180

    L3 L4 180

    6-14

    Main Menu>Preprocessor>Meshing>Size Cntrls>ManualSize

    Lines>Picked Lines ZZ=0

    3055OKElement Sizes on Picked Lines

    NDIV3OK

  • ANSYS

    107

    6-14

    3

    SelectEntities

    AreasBy LocationX coordinatesMin

    Max0.3048OKMain Menu>Preprocessor>

    Meshing>MeshAttributes>All Areas2

    12SHELL43OKSelect

    Everything

    SelectEntities

    AreasBy LocationX coordinatesMin

    Max0.1698OKMain Menu>Preprocessor>

    Meshing>MeshAttributes>All Areas3

    22SHELL43OKSelect

    Everything

    Main Menu>Preprocessor>Meshing>Mesh>Areas>Free

    Pick All 6-15

  • ANSYS

    108

    6-15

    4

    Main Menu>Preprocessor>Modeling>Create>Volumes>

    Cylinder>Partial Cylinder Partial CylinderWPX

    0WPY0Rad-10.1698

    Theta-10 Rad-20.3048 Theta-2

    180Depth30Apply

    WPX0WPY

    0Rad-10.1698Theta-1180

    Rad-20.3048 Theta-2360 Depth

    30OK

    SelectEntities

    LinesBy LocationY coordinates

    MinMax0From FullOKSelect

    EntitiesLines

    By LocationY coordinatesMinMax180

    Also SelectOKSelectEntities

    Lines

    By LocationX coordinatesMinMax0.1698Unselect

    OKSelectEntities

    LinesBy LocationX

    coordinatesMinMax0.3048UnselectOK

  • ANSYS

    109

    Main Menu>Preprocessor>Meshing>Size Cntrls>ManualSize>

    Lines>All Lines Element SizeNDIV2

    OK

    SelectEverthing SelectEntities

    Lines

    By LocationX coordinatesMinMax0.1698From Full

    OKSelectEntities

    LinesBy LocationX

    coordinatesMinMax0.3048Also SelectOK

    SelectEntities

    LinesBy LocationY coordinatesMin

    Max0UnselectOKSelect

    EntitiesLines

    By LocationY coordinatesMinMax180

    UnselectOKMain Menu>Preprocessor>Meshing>

    Size Cntrls>ManualSize>Lines>All Lines Element SizeNDIV

    6OK

    SelectEverthing SelectEntities

    Lines

    By LocationY coordinatesMinMax0From Full

    OKSelectEntities

    Lines By LocationY

    coordinatesMinMax180Also SelectOK

    SelectEntities

    LinesBy LocationZ coordinatesMin

    Max030Reselect OKMain Menu>

    Preprocessor>Meshing>Size Cntrls>ManualSize>Lines>All Lines Element

    SizeSIZE1OK

    SelectEverthingMain Menu>Preprocessor>

    Meshing>Mesh Attributes>All Volumes

    11SOLID45OKMain Menu>Preprocessor>

    Meshing>Mesh>Volumes Sweep>Sweep Volume Sweeping

    Pick All 6-16

  • ANSYS

    110

    6-16

    5

    SelectEntities

    ElemnetsBy AttributesMaterial num

    MinMax1OKMain Menu>Preprocessor>

    Numbering Ctrls>Merge ItemsLabel

    NodesOKSelectEverthingMain

    Menu>Preprocessor>Numbering Ctrls>Compress NubersLabel

    NodesApplyElementsOK

    SelectEntities

    NodesBy LocationZ LocationMin

    Max130OKMain Menu>Preprocessor

    >Coupling/Ceqn>Coincident NodesOK

    SelectEntities

    NodesBy LocationZ coordinatesMin

    Max0OKList>Nodes Sort NODE Listing

    Coord.w/AnglesOK 6-17

    1Main Menu>Preprocessor

    >Coupling/Ceqn>Couple DOFs Define Coupled DOFsPick All

    6-18Select

    Everything

  • ANSYS

    111

    6-17

    6-18

    Main Menu>FinishSAVE DB

    APDL

    6.3.36.3.36.3.3

    6.3.3

    111

    1

    Main Menu>Solution>Analysis Type>New Analysis

    6-19StaticOK

    6-19

  • ANSYS

    112

    222

    2

    Main Menu>Solution>Unabridged Menu

    Main Menu>Solution>Analysis Type>Analysis Options

    Static or Steady-State Analysis

    1

    Static or Steady-State AnalysisNonlinear OptionNLGEOMOn

    2Newton-Raphson

    Static or Steady-State AnalysisNonlinear OptionNROPTFull

    N-RAdaptive descentOn if necessary

    3

    Static or Steady-State AnalysisEQSLVEquation solverSparse

    solver

    3

    Main Menu>Solution>Load Step Opts>Nonlinear>Convergence

    Crit Default Nonlinear Convergence CriteriaReplace 6-22

    Nonlinear Convergence CriteriaDisplacement U

    TOLER0.001NORMInfinite norm

    OK

    5

    Main Menu>Solution>Load Step Opts>Nonlinear>Equilibrium Iter

    Equilibrium Iterations50OK

    6

    Main Menu>Solution>Load Step Opts>Nonlinear>Predictor

    PredictorOn for all sbstpOK

    7

    Main Menu>Solution>Load Step Opts>Output Ctrls>DB/Result

    File Controls for Database and Results File WritingItemAll iems

    FREQEvery SubstepCnameAll entities

    OK

  • ANSYS

    113

    333

    3

    Main Menu>Solution>Define Loads>Apply>Structural>

    Displacement>On NodesList of Items1

    OKAll DOFsOK

    6-20

    6-20

    444

    4

    111

    1

    1

    Main Menu>Solution>Analysis Type>soln ControlsSolution

    ControlsBasicTime at end of loadstep1.0

    OKSolution Controls

    2

    Main Menu>Solution>Define Loads>Apply>Structural>

    Inertia>Gravity>Global Apply (Gravitational) Acceleration

    ACELXACELYACELZ009.8

    3

    Main Menu>Solution>Load Step Opts>Write Load Step File

    Load step file number n1OK

    222

    2

  • ANSYS

    114

    1

    Main Menu>Solution>Analysis Type>soln ControlsSolution

    ControlsBasicTime at end of loadstep2.0

    OKSolution Controls

    2

    SelectEntities

    NodesBy LocationZ coordinatesMin

    Max55From FullOKSelect

    EntitiesNodes

    By LocationX coordinatesMinMax0.3048

    ReSelectOKMain Menu>Solution>Define Loads>

    Apply>Structural>Force/Moment>On NodesPick All

    Apply F/M on Nodes Direction of force/momentFz

    Force/moment value-3E5/12 12 OKSelect

    Everthing

    SelectEntities

    NodesBy LocationZ coordinatesMin

    Max55OKMain Menu>Solution>Define Loads>

    Apply>Structural>Displacement>On NodesPick All

    LabUxVALUE

    0.1OKSelectEverthing

    3

    Main Menu>Solution>Load Step Opts>Write Load Step File

    Load step file number n2OK

    333

    3

    1

    Main Menu>Solution>Analysis Type>soln ControlsSolution

    ControlsBasicTime at end of loadstep6.0

    OKSolution Controls

    2

  • ANSYS

    115

    SelectEntitiesZ Location30

    Main Menu>Solution>Define Loads>Apply>

    Structural>Displacement>On NodesPick All

    ux2.0OKSelect

    Everything

    3

    Main Menu>Solution>Load Step Opts>Write Load Step File

    Load step file number n6OK

    555

    5

    Main Menu>Solution>Solve>From LS Files Solve Load Step

    FilesStarting LS File Number1Ending LS File Number

    4OK 6-21

    Solution is doneMain Menu>Finish

    6-21

    APDL

    6.3.4

  • ANSYS

    116

    (1)(1)(1)

    (1)

    POST1POST1POST1

    POST1

    Main Menu>General Postproc>Results Summary

    6-22

    111

    1

    Main Menu>General Postproc>Read Results>Last Set

    Main Menu>General Postproc>Plot Results>

    Deformed Shape 6-23Def shape onlyOK

    PlotCtrls>Style>Size and Shape 6-24/ESHAPE

    OnX distortion ratio2.5 X

    2.5OK 6-25

    6-22

    6-23

  • ANSYS

    117

    6-24

    6-25

    222

    2

    Main Menu>General Postproc>Plot Results>Contour Plot>Nodal Solu

    Contour Nodal Solution DataItem to be contouredNodal

    Solution>Displacment vector sum, 6-26

  • ANSYS

    118

    6-26

    333

    3

    1

    SelectEntities

    ElementsByAttributesMat numMin

    Max2From FullOKMain Menu

    >General Postproc>Plot Results>Contour Plot>Nodal Solu Contour Nodal Solution

    DataItem to be contouredStress>von Mises stress

    6-27Item to be contoured

    Plastic Strain>von Mises plastic strain 6-28

  • ANSYS

    119

    6-27

    6-28

    2

    SelectEntities

    ElementsByAttributesMat numMin

    Max3From FullOKMain Menu

    >General Postproc>Plot Results>Contour Plot>Nodal Solu Contour Nodal Solution

    DataItem to be contouredStress>von Mises stress

    6-29Item to be contoured

    Plastic Strain>von Mises plastic strain 6-30

  • ANSYS

    120

    6-29

    6-30

    3

    SelectEntities

    ElementsByAttributesMat numMin

    Max1From FullOKMain Menu

    >General Postproc>Plot Results>Contour Plot>Nodal Solu Contour Nodal Solution

    DataItem to be contouredStress>von Mises stress

    6-31Item to be contoured

    Plastic Strain>von Mises plastic strain 6-32

  • ANSYS

    121

    6-31

    6-32

    444

    4

    Main Menu>General Postproc>List Results>Nodal Solution

    Contour Nodal Solution Data Item to be contouredNodal Solution

    >DOF Solution>Displacment vector sum 6-33

    Stress>von Mises stress 6-34

  • ANSYS

    122

    6-33

    6-34

    SelectEntities

    NodesBy LocationZ LocationMin

  • ANSYS

    123

    Max0From FullOKSelect

    EntitiesNodes

    By LocationZ LocationMinMax55

    Also SelectOKMain Menu>General Postproc>List Results

    >Reaction Solu List Reaction SolutionLabAll items

    6-35

    6-35

    222

    2

    POST26POST26POST26

    POST26

    Main Menu>TimeHist Postproc

    1

    Main Menu>TimeHist Postproc>Define Variables 6-36

    Define Time-HistoryAdd 6-37Add Time-History

    VariablesNodal DOF ResultsOK

    6-36

  • ANSYS

    124

    6-37

    List of Items130

    SelectOK 6-38

    Define Nodal Data2130

    DeflectionTranslation UXOK

    Defined Time-History Variables

    6-37

    2

    Defined Time-History VariablesAddAdd Time-History Variables

    Reaction forces OKList of Ite ms

    1OK Define Nodal Data

    31

    ReactionF_1Struct forces FXOKDefined Time-

    History VariablesAddAdd Time-History Variables

    Reaction forcesOKList of Items

  • ANSYS

    125

    125OK Define Nodal Data

    4 125

    ReactionF_2Struct forces FXOK 6-38

    Defined Time-History VariablesClose

    6-38

    3

    Main Menu>TimeHist Postproc>Variable Viewer 6-39

    Time History VariablesReactionF_2Calculator

    6-39

    ABS(rforce(125,F,X)+ rforce(1,F,X))

  • ANSYS

    126

    ENTER

    6-40Time History VariablesName

    calc_5

    6-40

    4

    Main Menu>TimeHist Postproc>Settings>GraphX

    Graph SettingsXVAR(X-axis variables)Single variable

    Single variable No.2OK

    Utility Menu>PlotpCtrls>Style>Graphs>Modify Axes

    DeflectionReactionFOK

    Main Menu>TimeHist Postproc>Graph VariablesNVAR1

    5OK 6-41

    6-41

    600Kn,

    5

  • ANSYS

    127

    Main Menu>TimeHist Postpro>List Variables List Time-Hist

    VariablesNVAR2345OK

    6-42

    EXCEL

    6