lab01 example patran/nastran

&

7 :

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.

3


3

1: , . , , . , . Patran :

1.1:

4


( ). click Geometry. 4.

4

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 .

8

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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10

:

Geometry Filter/Select: FEM

(FEM). Geometry , , .. , ( ) Select Nodes. Add (Application Region) OK. Apply . 11 .

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:

1 x 2 y 3 z 4 x 5 y 6 z

3.2: () :

Action: Create

11


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 .

12

3.3: :

Action: Create

Object: Inertial Load

Type: Element Uniform 12


. 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 :

13


Apply .

5:

. :

Action: Create

Object: 1D

Type: Rod

( ).

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New Set Name , Rod. , ( , ) ( ). Input Properties. Mat Prop Name ( 13).

13

, , . Aluminum ( 14). Material Name ( 13). (40e-4, 40cm2) . Select Application Region. Select Members . . Add Application Region OK . Apply .

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14

6:

. :

Action: Analyze 16


Object: Entire Model

Method: Full Run

. Job Name , Lab01. , ( , ) ( ).

: , Patran . .

Subcases click Default Available Subcases ( 15).

15

Subcase Name Default ( 16).

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16

Output Requests. Select Result Type Element Strains ( 17). Output Requests . OK, , Apply Apply.

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17

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.

19

( 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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lab01 example patran/nastran

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