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WORKSHOP 4 Stadium Truss
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  • WORKSHOP 4

    Stadium Truss

  • WS4-2NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

  • WS4-3NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    z Workshop Objectivesz Build a truss model and analyze it. Determine the maximum

    displacement and stresses. Is your design better than the arched-roof truss design presented in the Case Study?

    z Visualize the load path in the truss by plotting the rod elementaxial stresses. Follow the load from the load application point to the fixed base. Do the stresses make sense to you?

    z Become familiar with the .f06 file

  • WS4-4NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    z Problem Descriptionz Three truss designs are presented on the following pages. Select

    one design and analyze it.z The truss is made from steel with E = 30 x 106 psi and = 0.3.z The cross-sectional area is A = 4.516 in2.z The torsional constant is 37.398 in4.z A 500-lb point load is applied at (60,168,0).z The truss is bolted down at the Y=0 boundary.z Model the truss with rod elements.

  • WS4-5NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Configuration #1

    Problem definition

  • WS4-6NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Configuration #2

    Problem definition

  • WS4-7NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Configuration #3

    Problem definition

  • WS4-8NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    z Suggested Exercise Steps1. Select a truss configuration to model2. Create a new database3. Create nodes and elements4. Create Material Properties 5. Create Physical Properties6. Apply Loads and Boundary Conditions7. Run the finite element analysis using MSC.Nastran8. Read the results into MSC.Patran9. Plot displacements and stresses10. Examine the .f06 file

  • WS4-9NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 1. Choose a Truss Configuration

    Configuration #1

  • WS4-10NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 2. Create New Database

    Create a new database called stadium_truss.db.

    a. File / New.b. Enter stadium_truss as the file

    name.c. Click OK.d. Choose Default Tolerance.e. Select MSC.Nastran as the

    Analysis Code.f. Select Structural as the

    Analysis Type. g. Click OK.

    a

    d

    e

    f

    gb c

  • WS4-11NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 3. Create Nodes and Elements

    Create the first node.a. Elements: Create / Node /

    Edit.b. Enter [420 0 0] for the Node

    Location List.c. Click Apply.d. Click the Node size icon.

    d

    a

    b

    c

  • WS4-12NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 3. Create Nodes and Elements

    Finish creating all 11 nodes.

  • WS4-13NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 3. Create Nodes and Elements

    Create an element between the first two nodes.

    a. Elements: Create / Element / Edit.

    b. Set the Shape to Bar, Topology to Bar 2, and Pattern to Standard.

    c. Screen click on Node 1 and Node 2. An element is automatically created because Auto Execute is checked.

    b

    c

    a

    Node 1 Node 2

  • WS4-14NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Finish creating all19 elements.

    Step 3. Create Nodes and Elements

  • WS4-15NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 4. Create Material Properties

    Create an isotropic materiala. Materials: Create / Isotropic /

    Manual Input.b. Under Material Name input

    Steel.c. Click Input Properties, then

    enter 30e6 for the elastic modulus and 0.3 for the Poisson Ratio.

    d. Click OK.e. Click Apply.

    d

    a

    e

    b

    c

  • WS4-16NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 5. Create Physical Properties

    Create physical properties for the rod elements

    a. Properties: Create / 1 D / Rod.

    b. Under Property Set Name input Circular_Rod.

    c. Click Input Properties.d. Click on the Select Material

    Icon e. Select steel for the material. f. Enter 4.516 for the Area.g. Enter 37.398 for the

    Torsional Constant.h. Click OK.

    df

    e

    g

    h

    a

    b

    c

  • WS4-17NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 5. Create Physical Properties

    Select application regiona. Click in the Select

    Members Box.b. Select the Beam

    element filter.c. Use the cursor to

    drag across all elements

    d. Click Add.e. Click Apply.

    b

    ad

    e

    c

  • WS4-18NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 6. Apply Loads and Boundary Conditions

    Create the boundary conditiona. Loads/BCs: Create /

    Displacement / Nodal.b. For the set name, input

    Fixed.c. Click Input Data.d. Enter for

    Translations and for Rotations.

    e. Click OK.

    d

    e

    a

    b

    c

  • WS4-19NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 6. Apply Loads and Boundary Conditions

    Apply the boundary conditiona. Click Select

    Application Region.b. For the Geometry

    Filter, select FEM.c. For the application

    region, select the base of the truss.

    d. Click Add.e. Click OK.

    b

    c

    d

    e

    a

  • WS4-20NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Finish creating the boundary condition

    a. Click Apply.

    Step 6. Apply Loads and Boundary Conditions

    a

  • WS4-21NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 6. Apply Loads and Boundary Conditions

    Create another boundary condition to constrain DOFs not connected to any element

    a. Loads/BCs: Create / Displacement / Nodal.

    b. For the set name, input Unused_DOF.

    c. Click Input Data.d. Enter < , ,0> for

    Translations and < , ,0> for Rotations.

    e. Click OK.

    d

    e

    a

    b

    c

  • WS4-22NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 6. Apply Loads and Boundary Conditions

    Apply the displacementsa. Click Select

    Application Region.b. For the Geometry

    Filter, select FEM.c. For the application

    region, select the rest of the truss.

    d. Click Add.e. Click OK.f. Click Apply.

    c

    d

    e

    b

    a

    f

  • WS4-23NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Create a load named forcea. Loads/BCs: Create / Force /

    Nodal.b. For the New Set Name,

    enter Force.c. Click Input Data.d. Enter a force of .e. Click OK.

    Step 6. Apply Loads and Boundary Conditions

    d

    e

    a

    b

    c

  • WS4-24NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 6. Apply Loads and Boundary Conditions

    Apply the load forcea. Click Select

    Application Region.b. For the Geometry

    Filter, select FEM.c. For the application

    region, select the node at the tip of the truss as shown.

    d. Click Add.e. Click OK.

    b

    c

    d

    e

    a

  • WS4-25NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Finish creating the loada. Click Apply.

    Step 6. Apply Loads and Boundary Conditions

    a

  • WS4-26NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 7. Nastran Analysis

    Analyze the modela. Analysis: Analyze / Entire

    Model / Full Run.b. Click Solution Typec. Choose Linear Static.d. Click OK.e. Click Apply.

    c

    d

    b

    a

    e

  • WS4-27NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 8. Read Results File into Patran

    Attach the results filea. Analysis: Access Results

    / Attach XDB / Result Entities.

    b. Click Select Results File.

    c. Choose the results file stadium_truss.xdb.

    d. Click OK.e. Click Apply.

    e

    a

    b

    c

    d

  • WS4-28NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 9. Plot Displacements and Stresses

    Create a quick plota. Results: Create / Quick

    Plot.b. Select Stress Tensor

    and X Component as the Fringe Result.

    c. Select Displacements, Translational as the deformation result.

    d. Click Apply. e. Record the maximum

    displacement and maximum and minimum stress.

    Max displacement = ______

    Max X Stress = ______

    Min X Stress = ______

    a

    b

    c

    d

  • WS4-29NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 9. Plot Displacements and Stresses

    Create a fringe plota. Results: Create / Fringe.b. Select Stress Tensor as

    the Fringe Result.c. Select X Component as

    the Fringe Result Quantity.

    d. Click on the Plot Options Icon.

    e. Set the Averaging Definition Domain to None.

    f. Click Apply.

    a

    b

    c

    e

    f

    d

  • WS4-30NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 9. Plot Displacements and Stresses

    View the un-averaged resultsa. Note the change in

    maximum stress.

    Un-averaged Max Stress =

    ____________________

    Un-averaged Min Stress =

    ____________________

  • WS4-31NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 10. Examine the .f06 File

    Examine the .f06 filea. Open the directory in

    which your database is saved.

    b. Find the file titled stadium_truss.f06 .

    c. Open this file with any text editor.

    d. Verify that the displacement and stress results agree with the graphical results shown in Patran.

  • WS4-32NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 1. Choose a Truss Configuration

    Configuration #2

  • WS4-33NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 2. Create New Database

    Create a new database called stadium_truss.db.

    a. File / New.b. Enter stadium_truss as the

    file name.c. Click OK.d. Choose Default Tolerance.e. Select MSC.Nastran as the

    Analysis Code.f. Select Structural as the

    Analysis Type.g. Click OK.

    a

    d

    e

    f

    gb c

  • WS4-34NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 3. Create Nodes and Elements

    Create the first node.a. Elements: Create / Node /

    Edit.b. Enter [420 0 0] for the

    Node Location List.c. Click Apply.d. Click the Node Size icon.

    d

    a

    b

    c

  • WS4-35NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 3. Create Nodes and Elements

    Finish creating all 9 nodes.

  • WS4-36NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 3. Create Nodes and Elements

    Create an element between the first two nodes.

    a. Elements: Create / Element / Edit.

    b. Set the Shape to Bar, Topology to Bar 2, and Pattern to Standard.

    c. Screen click on Node 1 and Node 2. An element is automatically created because Auto Execute is checked.

    b

    c

    a

    Node 1 Node 2

  • WS4-37NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Finish creating all 15 elements.

    Step 3. Create Nodes and Elements

  • WS4-38NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 4. Create Material Properties

    Create an isotropic materiala. Materials: Create / Isotropic

    / Manual Input.b. Under Material Name input

    Steel.c. Click Input Properties,

    then enter 30e6 for the elastic modulus and 0.3 for the Poisson Ratio.

    d. Click OK.e. Click Apply.

    d

    a

    e

    b

    c

  • WS4-39NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 5. Create Physical Properties

    Create physical properties for the rod elements

    a. Properties: Create / 1 D / Rod.

    b. Under Property Set Name input Circular_Rod.

    c. Click Input Properties. d. Click on the Select

    Material icon. e. Select steel for the

    material. f. Enter 4.516 for the Area.g. Enter 37.398 for the

    Torsional Constant.h. Click OK.

    a

    b

    df

    e

    g

    c

    h

  • WS4-40NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 5. Create Physical Properties

    Select application regiona. Click in the Select

    Members Box.b. Select the Beam

    element filter.c. Use the cursor to

    drag across all elements

    d. Click Add.e. Click Apply.

    b

    ad

    e

    c

  • WS4-41NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 6. Apply Loads and Boundary Conditions

    Create the boundary conditiona. Loads/BCs: Create /

    Displacement / Nodal.b. For the set name, input

    Fixed.c. Click Input Data.d. Enter for

    Translations and for Rotations.

    e. Click OK.

    a

    b

    c

    d

    e

  • WS4-42NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 6. Apply Loads and Boundary Conditions

    Apply the boundary conditiona. Click Select

    Application Region.b. For the Geometry

    Filter, select FEM.c. For the application

    region, select the base of the truss.

    d. Click Add.e. Click OK.

    a

    b

    c

    d

    e

  • WS4-43NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Finish creating the boundary condition

    a. Click Apply.

    Step 6. Apply Loads and Boundary Conditions

    a

  • WS4-44NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 6. Apply Loads and Boundary Conditions

    Create another boundary condition to constrain DOFs not connected to any element

    a. Loads/BCs: Create / Displacement / Nodal.

    b. For the set name, input Unused_DOF.

    c. Click Input Data.d. Enter < , ,0> for

    Translations and < , ,0> for Rotations.

    e. Click OK.

    a

    b

    c

    d

    e

  • WS4-45NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 6. Apply Loads and Boundary Conditions

    Apply the displacementsa. Click Select

    Application Region.b. For the Geometry

    Filter, select FEM.c. For the application

    region, select the rest of the truss.

    d. Click Add.e. Click OK.f. Click Apply.

    c

    d

    e

    b

    a

    f

  • WS4-46NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Create a load named forcea. Loads/BCs: Create / Force /

    Nodal.b. For the New Set Name,

    enter Force.c. Click Input Data.d. Enter a force of .e. Click OK.

    Step 6. Apply Loads and Boundary Conditions

    d

    e

    a

    b

    c

  • WS4-47NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 6. Apply Loads and Boundary Conditions

    Apply the load forcea. Click Select

    Application Region.b. For the Geometry

    Filter, select FEM.c. For the application

    region, select the node below the tip of the truss as shown.

    d. Click Add.e. Click OK.

    a

    b

    c

    d

    e

  • WS4-48NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Finish creating the loada. Click Apply.

    Step 6. Apply Loads and Boundary Conditions

    a

  • WS4-49NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 7. Nastran Analysis

    Analyze the modela. Analysis: Analyze / Entire

    Model / Full Run.b. Click Solution Typec. Choose Linear Static.d. Click OK.e. Click Apply.

    b

    a

    e

    c

    d

  • WS4-50NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 8. Read Results File into Patran

    Attach the results filea. Analysis: Access Results

    / Attach XDB / Result Entities.

    b. Click Select Results File.

    c. Choose the results file stadium_truss.xdb.

    d. Click OK.e. Click Apply.

    e

    a

    b

    c

    d

  • WS4-51NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 9. Plot Displacements and Stresses

    Create a quick plota. Results: Create / Quick

    Plot.b. Select Stress Tensor

    and X Component as the Fringe Result.

    c. Select Displacements, Translational as the deformation result.

    d. Click Apply. e. Record the maximum

    displacement and maximum and minimum stress.

    Max displacement = ______

    Max X Stress = ______

    Min X Stress = ______

    a

    b

    c

    d

  • WS4-52NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 9. Plot Displacements and Stresses

    a

    b

    d

    e

    f

    Create a fringe plota. Results: Create / Fringe.b. Select Stress Tensor as

    the Fringe Result.c. Select X Component as

    the Fringe Result Quantity.

    d. Click on the Plot Options Icon.

    e. Set the Averaging Definition Domain to None.

    f. Click Apply.

    c

  • WS4-53NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 9. Plot Displacements and Stresses

    View the un-averaged resultsa. Note the change in

    maximum stress.

    Un-averaged Max Stress =

    ____________________

    Un-averaged Min Stress =

    ____________________

  • WS4-54NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 10. Examine the .f06 File

    Examine the .f06 filea. Open the directory in

    which your database is saved.

    b. Find the file titled stadium_truss.f06 .

    c. Open this file with any text editor.

    d. Verify that the displacement and stress results agree with the graphical results shown in Patran.

  • WS4-55NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 1. Choose a Truss Configuration

    Configuration #3

  • WS4-56NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 2. Create New Database

    Create a new database called stadium_truss.db.

    a. File / New.b. Enter stadium_truss as the

    file name.c. Click OK.d. Choose Default Tolerance.e. Select MSC.Nastran as the

    Analysis Code.f. Select Structural as the

    Analysis Type.g. Click OK.

    a

    d

    e

    f

    gb c

  • WS4-57NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 3. Create Nodes and Elements

    Create the first node.a. Elements: Create / Node /

    Edit.b. Enter [420 0 0] for the

    Node Location List.c. Click Apply.d. Click the Node Size icon.

    d

    a

    b

    c

  • WS4-58NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 3. Create Nodes and Elements

    Finish creating all 18 nodes.

  • WS4-59NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 3. Create Nodes and Elements

    Create an element between the first two nodes.

    a. Elements: Create / Element / Edit.

    b. Set the Shape to Bar, Topology to Bar 2, and Pattern to Standard.

    c. Screen click on Node 1 and Node 2. An element is automatically created because Auto Execute is checked.

    b

    c

    a

    Node 1 Node 2

  • WS4-60NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Finish creating all 34 elements.

    Step 3. Create Nodes and Elements

  • WS4-61NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 4. Create Material Properties

    Create an isotropic materiala. Materials: Create / Isotropic

    / Manual Input.b. Under Material Name input

    Steel.c. Click Input Properties,

    then enter 30e6 for the Elastic Modulus and 0.3 for the Poisson Ratio.

    d. Click OK.e. Click Apply.

    a

    e

    b

    c

    d

  • WS4-62NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    df

    e

    g

    Step 5. Create Physical Properties

    Create physical properties for the rod elements

    a. Properties: Create / 1D / Rod.

    b. Under Property Set Name input Circular_Rod.

    c. Click Input Properties.d. Click on the Select Material

    Icon. e. Select steel for the material. f. Enter 4.516 for the Area.g. Enter 37.398 for the

    Torsional Constant.h. Click OK.

    a

    b

    c

    h

  • WS4-63NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 5. Create Physical Properties

    Select application regiona. Click in the Select

    Members Box.b. Select the Beam

    element filter.c. Use the cursor to

    drag across all elements

    d. Click Add.e. Click Apply.

    a

    b

    c

    d

    e

  • WS4-64NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 6. Apply Loads and Boundary Conditions

    Create the boundary conditiona. Loads/BCs: Create /

    Displacement / Nodal.b. For the set name, input

    Fixed.c. Click Input Data.d. Enter for

    Translations and for Rotations.

    e. Click OK.

    a

    b

    c

    d

    e

  • WS4-65NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 6. Apply Loads and Boundary Conditions

    Apply the boundary conditiona. Click Select

    Application Region.b. For the Geometry

    Filter, select FEM.c. For the application

    region, select the base of the truss.

    d. Click Add.e. Click OK.

    a

    b

    c

    d

    e

  • WS4-66NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Finish creating the boundary condition

    a. Click Apply.

    Step 6. Apply Loads and Boundary Conditions

    a

  • WS4-67NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 6. Apply Loads and Boundary Conditions

    Create another boundary condition to constrain DOFs not connected to any element

    a. Loads/BCs: Create / Displacement / Nodal.

    b. For the set name, input Unused_DOF.

    c. Click Input Data.d. Enter < , ,0> for

    Translations and < , ,0> for Rotations.

    e. Click OK.

    a

    b

    c

    d

    e

  • WS4-68NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 6. Apply Loads and Boundary Conditions

    Apply the displacementsa. Click Select

    Application Region.b. For the Geometry

    Filter, select FEM.c. For the application

    region, select the rest of the truss.

    d. Click Add.e. Click OK.f. Click Apply.

    a

    c

    d

    e

    f

    b

  • WS4-69NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Create a load named forcea. Loads/BCs: Create / Force /

    Nodal.b. For the New Set Name,

    enter Force.c. Click Input Data.d. Enter a force of .e. Click OK.

    Step 6. Apply Loads and Boundary Conditions

    a

    b

    c

    d

    e

  • WS4-70NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 6. Apply Loads and Boundary Conditions

    Apply the load forcea. Click Select

    Application Region.b. For the Geometry

    Filter, select FEM.c. For the application

    region, select the node at the tip of the truss as shown.

    d. Click Add.e. Click OK.

    a

    b

    c

    d

    e

  • WS4-71NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Finish creating the loada. Click Apply.

    Step 6. Apply Loads and Boundary Conditions

    a

  • WS4-72NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 7. Nastran Analysis

    Analyze the modela. Analysis: Analyze / Entire

    Model / Full Run.b. Click Solution Typec. Choose Linear Static.d. Click OK.e. Click Apply.

    b

    a

    e

    c

    d

  • WS4-73NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 8. Read Results File into Patran

    Attach the results filea. Analysis: Access Results

    / Attach XDB / Result Entities.

    b. Click Select Results File.

    c. Choose the results file stadium_truss.xdb.

    d. Click OK.e. Click Apply.

    e

    a

    b

    c

    d

  • WS4-74NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 9. Plot Displacements and Stresses

    Create a quick plota. Results: Create / Quick

    Plot.b. Select Stress Tensor

    and X Component as the Fringe Result.

    c. Select Displacements, Translational as the deformation result.

    d. Click Apply. e. Record the maximum

    displacement and maximum and minimum stress.

    Max displacement = ______

    Max X Stress = ______

    Min X Stress = ______

    a

    b

    c

    d

  • WS4-75NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 9. Plot Displacements and Stresses

    Create a fringe plota. Results: Create / Fringe.b. Select Stress Tensor as

    the Fringe Result.c. Select X Component as

    the Fringe Result Quantity.

    d. Click on the Plot Options Icon.

    e. Set the Averaging Definition Domain to None.

    f. Click Apply.

    a

    b

    d

    e

    f

    c

  • WS4-76NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 9. Plot Displacements and Stresses

    View the un-averaged resultsa. Note the change in

    maximum stress.

    Un-averaged Max Stress =

    ____________________

    Un-averaged Min Stress =

    ____________________

  • WS4-77NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 10. Examine the .f06 File

    Examine the .f06 filea. Open the directory in

    which your database is saved.

    b. Find the file titled stadium_truss.f06 .

    c. Open this file with any text editor.

    d. Verify that the displacement and stress results agree with the graphical results shown in Patran.

  • WS4-78NAS120, Workshop 4, May 2006Copyright 2005 MSC.Software Corporation

    Step 2. Create New DatabaseStep 3. Create Nodes and ElementsStep 3. Create Nodes and ElementsStep 4. Create Material PropertiesStep 5. Create Physical PropertiesStep 6. Apply Loads and Boundary ConditionsStep 6. Apply Loads and Boundary Conditions

    /ColorImageDict > /JPEG2000ColorACSImageDict > /JPEG2000ColorImageDict > /AntiAliasGrayImages false /CropGrayImages true /GrayImageMinResolution 300 /GrayImageMinResolutionPolicy /OK /DownsampleGrayImages true /GrayImageDownsampleType /Bicubic /GrayImageResolution 300 /GrayImageDepth -1 /GrayImageMinDownsampleDepth 2 /GrayImageDownsampleThreshold 1.50000 /EncodeGrayImages true /GrayImageFilter /DCTEncode /AutoFilterGrayImages true /GrayImageAutoFilterStrategy /JPEG /GrayACSImageDict > /GrayImageDict > /JPEG2000GrayACSImageDict > /JPEG2000GrayImageDict > /AntiAliasMonoImages false /CropMonoImages true /MonoImageMinResolution 1200 /MonoImageMinResolutionPolicy /OK /DownsampleMonoImages true /MonoImageDownsampleType /Bicubic /MonoImageResolution 1200 /MonoImageDepth -1 /MonoImageDownsampleThreshold 1.50000 /EncodeMonoImages true /MonoImageFilter /CCITTFaxEncode /MonoImageDict > /AllowPSXObjects false /CheckCompliance [ /None ] /PDFX1aCheck false /PDFX3Check false /PDFXCompliantPDFOnly false /PDFXNoTrimBoxError true /PDFXTrimBoxToMediaBoxOffset [ 0.00000 0.00000 0.00000 0.00000 ] /PDFXSetBleedBoxToMediaBox true /PDFXBleedBoxToTrimBoxOffset [ 0.00000 0.00000 0.00000 0.00000 ] /PDFXOutputIntentProfile () /PDFXOutputConditionIdentifier () /PDFXOutputCondition () /PDFXRegistryName () /PDFXTrapped /False

    /Description > /Namespace [ (Adobe) (Common) (1.0) ] /OtherNamespaces [ > /FormElements false /GenerateStructure true /IncludeBookmarks false /IncludeHyperlinks false /IncludeInteractive false /IncludeLayers false /IncludeProfiles true /MultimediaHandling /UseObjectSettings /Namespace [ (Adobe) (CreativeSuite) (2.0) ] /PDFXOutputIntentProfileSelector /NA /PreserveEditing true /UntaggedCMYKHandling /LeaveUntagged /UntaggedRGBHandling /LeaveUntagged /UseDocumentBleed false >> ]>> setdistillerparams> setpagedevice