&
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2014-2015
2014
UPATRAS http://saam.mech.upatras.gr/index.php/courses/ 2014-2015 MEAD|AML|SAAM
MSC.Patran/Nastran Nastran ( solver) Nastran , . NASA 1960 NASA STRucture ANalysis. MacNeal-Schwendler Corporation (MSC) NASTRAN MSC.NASTRAN. Patran (/- pre/post-processor) Patran / (pro/post-processing software) (Finite Element Analysis FEA) , - MSC.Nastran, Marc, Abaqus, LS-Dyna, ANSYS Pam-Crash. , , , , .. .
MSC.PATRAN/NASTRAN . / .
PATRAN , Windows, . . on/off, .
Geometry Analysis. :
/
TM Top Menu RM Right Menu TM
SM Subordinate Menu
RM
Click ( )
Bold Characters
Italic Characters
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01
:
MSC.PATRAN/NASTRAN
, . 1 . 90. , () P = 50kN. 1 .
1
L 20 m (Cross Section Area) A 40 cm2 (Youngs Modulus) E 70 GPa
(Mass Density) 2500 kg/m3 1
4 MSC.PATRAN/NASTRAN. , . :
Le = L/N = 20/4 = 5m.
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: 1. . 2. . 3. . 4. . 5. . 6. . 7. .
0: MSC.PATRAN/NASTRAN . . :
START Programs Applications MSC.Patran/Nastran
. :
File New
. . Lab01 ( .db). click .
: / .
, RM (right Menu). ( ). L = 20 m, 20.0 . RM 3.
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1: , . , , . , . Patran :
1.1:
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( ). click Geometry. 4.
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Geometry (RM) .
Action: Create
Object: Point
Method: XYZ
(x, y, z). 5 .
5
Point Coordinate List . :
[ ]1 1 1x y z [ ]2 2 2x y z [ ]n n nx y z
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. ( ) (,). (.). : Auto Execute . 2 , . [0 0 0], L x. Point Coordinate List :
[ ]0 0 0 [ ]20 0 0 Apply. Point ID List 3. . Point ID List 3 . / Geometry :
Action: Delete
Object: Point
( ). , Apply Auto Execute . , Display ( 6) Entity Color/Label/Render ( 7).
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, Point.
Apply .
1.2: , Geometry :
Action: Create
Object: Curve
( )
Method: Point
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Option: 2Point
. Auto Execute, . . . . click Starting Point List Point 1. Apply .
: Auto Execute Patran Apply. Apply Auto Execute , . . ( , ..), :
Action: Delete
Object: Curve
. Apply, Auto Execute . ,
TM .
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2:
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.
2.1: (Mesh Seed) . 5 , 4 . , :
Action: Create
Object: Mesh Seed
Type: Uniform
. Number of Elements Number , 4. Auto Execute click Apply. Patran 5 4 . .
2.2: :
Action: Create
Object: Mesh
Type: Curve
( )
Topology: Bar2
. , click Curve List . Apply . Auto Execute. Patran
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5 (nodes) 4 (elements) ( 9).
9
3:
(Loads/BCs = Loads and Boundary Conditions) .
3.1: :
Action: Create
Object: Displacement
Type: Nodal
. New Set Name , Clamped_End. , ( , ) ( ). , ( ) Input Data. (Translations) (X, Y, Z), (Rotations) . 0 . 10 . :
1 2 3 x y zT T T u u u
1 2 3 x y zR R R OK , Select Application Region .
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:
Geometry Filter/Select: FEM
(FEM). Geometry , , .. , ( ) Select Nodes. Add (Application Region) OK. Apply . 11 .
11
:
1 x 2 y 3 z 4 x 5 y 6 z
3.2: () :
Action: Create
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Object: Force
Type: Nodal
. New Set Name , P_Load. , ( , ) ( ). Input Data. / :
1 2 3 x y zF F F F F F
1 2 3 x y zM M M M M M 50kN, :
. Select Application Region . :
Geometry Filter/Select: FEM
(FEM). , ( ) Select Nodes. Add (Application Region) OK. Apply . 11 12 .
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3.3: :
Action: Create
Object: Inertial Load
Type: Element Uniform 12
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. New Set Name , G_Load. , ( , ) ( ). Input Data. / :
1 2 3 x y zA A A A A A
1 2 3 x y zw w w :
x, , , . , Select Application Region, Apply. Select Application Region Patran .
4:
. :
Action: Create
Object: Isotropic
Type: Manual Input
. Material Name , Aluminum. Input Properties :
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Apply .
5:
. :
Action: Create
Object: 1D
Type: Rod
( ).
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New Set Name , Rod. , ( , ) ( ). Input Properties. Mat Prop Name ( 13).
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, , . Aluminum ( 14). Material Name ( 13). (40e-4, 40cm2) . Select Application Region. Select Members . . Add Application Region OK . Apply .
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6:
. :
Action: Analyze 16
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Object: Entire Model
Method: Full Run
. Job Name , Lab01. , ( , ) ( ).
: , Patran . .
Subcases click Default Available Subcases ( 15).
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Subcase Name Default ( 16).
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Output Requests. Select Result Type Element Strains ( 17). Output Requests . OK, , Apply Apply.
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Apply Nastran, ( 18). .
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7: Analysis :
Action: Access Results
Object: Attach XDB
Type: Result Entities
. Apply , Patran :
*** End: Attach Result File ***
: .
. :
Action: Create
Object: Quick Plot
.
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, . : 1. Select Result Cases, 2. Select Fringe Result 3. Select Deformation Result. . , .., .
Select Deformation Result Displacements, Translational ( 19) Apply.
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( 20).
20
x, Select Fringe Result :
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: Patran Quantity Von Mises, .
Apply . y .. , .
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, . Select Deformation Result Displacements, Translational Apply. , , :
Action: Create
Object: Cursor
Method: Scalar
. Select Cursor Result Quantity X-Component ( ) Target Entity Nodes. Apply . click ( ) .
: Target Entity Elements.
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