Ls-dyna隐式求解功能
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295 第十七章 第十七章 第十七章 第十七章 LS-DYNA 的隐式求解 的隐式求解 的隐式求解 的隐式求解 LS-DYNA LS-DYNA LS-DYNA 950 LS-DYNA 960 970 LS-DYNA 17.1 17.1.1 LS-DYNA ( ) 17.1.2 LS-DYNA Newmark Newton-Raphson 17.2 LS-DYNA LS-DYNA *CONTROL_IMPLICIT_GENERAL imflag=1 imflag=0 int n ext n n f f Ma - = n n ext n n n Ma f f u K a M - - = + + + Δ + Δ int 1 1 1
description
Ls-dyna隐式求解功能
Transcript of Ls-dyna隐式求解功能
LS-DYNA LS-DYNA LS-DYNA LS-DYNA 950 LS-DYNA 960 970 LS-DYNA
17.1
17.1.1 LS-DYNA
Man = fnext fnint
()17.1.2 LS-DYNA Newmark
Ma n+1 + Ku n+1 = f next+1 f nint Man
Newton-Raphson
17.2 LS-DYNA
LS-DYNA
*CONTROL_IMPLICIT_GENERAL
imflag=1imflag=0
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*CONTROL_IMPLICIT_LINEAR(v960 *CONTROL_IMPLICIT_SOLVER)*CONTROL_IMPLICIT_NONLINEAR( v960 *CONTROL_IMPLICIT_SOLUTION)imflag=2
*CONTROL_IMPLICIT_AUTO*CONTROL_IMPLICIT_STABILIZATION*CONTROL_IMPLICIT_DYNAMICS*CONTROL_IMPLICIT_EIGENVALUE
*CONTROL_IMPLICIT_GENERAL *CONTROL_IMPLICIT_BUCKLE v970*CONTROL_IMPLICIT_MODES v970
*CONTROL_IMPLICIT_LINEAR(v960*CONTROL_IMPLICIT_SOLVER)
Ku = R*CONTROL_IMPLICIT_NONLINEAR( v960*CONTROL_IMPLICIT_SOLUTION)
nlsolvr=1 1 nlprint=1 CTRL+ nlprint 296
*CONTROL_IMPLICIT_AUTO
*CONTROL_IMPLICIT_STABILIZATION
*CONTROL_IMPLICIT_DYNAMICS
Newmark
Imass=0Imass=1Imass=2
*CONTROL_IMPLICIT_EIGENVALUE
neig=15 15 297
3 *CONTROL_IMPLICIT_GENERAL*CONTROL_IMPLICIT_EIGENVALUE*CONTROL_TERMINATION18
D3EIGV D3POLT LS-PREPOST EIGOUTASCII 17.3 LS-DYNA
LS-DYNA 17.3.1 1S/R Hughes-Liu 6 2 x2 6 (dx, dy, dz, rx, ry, rz)*CONTROL_SHELL CPU LS-DYNA*SECTION_OPTION
16 6 (dx, dy, dz, rx, ry, rz) 2 x2 5 8
2
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18 6 (dx, dy, dz, rx, ry, rz) 2 x2 2
3
1 S/R 2 3 (dx, dy, dz)2 x2 x 2 CPU
17.3.2
18 3 (dx, dy, dz)2 x2 x 2
2
299
17.3.3
6 (dx, dy, dz, rx, ry, rz)st n3
s
tr
17.3.417.3.5
13 15 4 X-Y Y 15 2 (dx,dy) DOF (dz, rx, ry, rz) NIP=4
Y
X
17.4 LS-DYNA
LS-DYNA 970 960 3D Solid
1,2,3,4,5,6,7,9,12,13,18,20,24,26,30,49,57,63,91,92,103,104,106,115
Shell1,2,3,4,6,9,18,20,24,36,37,49,91,92,103,104,106,116,117,118
Beam1,3,4,6,9,18,20,24,100
2D Solid1,2,3,4,5,6,7,9,12,13,18,20,24,26,57,63
300
17.5 LS-DYNALS-DYNA
TIED B SNLOG=1ORIEN=1 2
17.6
LS-DYNA 17.6.1 NLPRINT NLPRINT=1CTRL+CNLPRINT
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CTRL+CCONV CTRL+CITER D3ITER 17.6.2 NLPRINT=1 D3ITER 17.6.3 D3HSP NLPRINT CTRL+CCONV ILIMIT=1 10 17.6.4 PART CTRL+CITER D3ITER 17.6.5 1 D3HSP LS-DYNA 2
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4
3
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17.7 LS-DYNA
15 LS-DYNA ANSYS
LS-DYNA 3 *CONTROL_IMPLICIT_GENERAL*CONTROL_IMPLICIT_EIGENVALUE*CONTROL_TERMINATION18D3EIGV EIGOUTD3EIGVD3POLTLS-PREPOSTLS-PREPOST
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ERROR: stackunderflowOFFENDING COMMAND: ~STACK:
