SS-T: 4015 Non-linear Incremental

Review incremental non-linear buckling.


Some features used in this tutorial are only available in SimSolid Advanced version. Please switch to Advanced to complete this tutorial.


In this tutorial, you will do the following:
  • Create geometric non-linear analysis.
  • Review incremental non-linear buckling results.

Model Description

The following file is needed for this tutorial:
  • hinge_beam.x_b

Import Geometry

  1. Open a new SimSolid session.
  2. Click the (Import from file) icon.

    Figure 1.
  3. In the Open geometry files dialog, choose hinge_beam.x_b.
  4. Click Open.
    The assembly will load in the modeling window. The Automatic connections dialog opens.
  5. Click Cancel to close the dialog.

Create Virtual Connectors

  1. In the Project Tree, click on the Connections branch.
  2. In the workbench toolbar, click (Virtual connector) > Pin.
  3. For Pin type, select the Rotating radio button.
  4. Select faces on the model as shown in Figure 2.

    Figure 2.
  5. Click OK.
  6. Create another virtual pin with the faces shown in Figure 3.

    Figure 3.
    Figure 4.

Assign Materials

  1. In the Project Tree, click on the Assembly branch.
  2. In the Assembly workbench, click (Apply materials).
  3. Pick Steel from the Generic materials list.
  4. Click Apply to all parts.
  5. Click Close.
    In the Assembly branch of the Project Tree, material properties are identified for each part.

Create Structural Non-linear Analysis

  1. In the main window toolbar, click > Structural non-linear.

    Figure 5.
  2. In the dialog, activate the Geometric non-linear check box.
  3. Select the Incremental loading radio button.
  4. For Number of load steps, enter 20.
    Figure 6.
  5. Click OK.

Create Immovable Support

  1. In the Analysis Workbench, click (Immovable support).
  2. In the dialog, verify the Faces radio button is selected.
  3. In the modeling window, select the faces shown in Figure 7.

    Figure 7.
  4. Click OK.

Create Displacement Load

  1. In the Analysis Workbench, select > Force/Displacement.
  2. In the dialog, verify the Faces radio button is selected.
  3. In the modeling window, select the faces shown in Figure 8.

    Figure 8.
  4. Change the load type to Displ. from the drop-down menu for each direction.
  5. For the X direction, enter 5.
  6. For the Y and Z directions, enter 0.
  7. Click OK.

Run Analysis

  1. In the Project Tree, open the Analysis Workbench.
  2. Click (Solve).
    A warning about groups of parts connected by sliding contact appears.
  3. In the warning dialog, click Yes to proceed with the analysis.
    Note: Using the Adapt for Features solution setting with nonlinear buckling analysis may cause significantly longer run times due to excessively high stresses in the model after buckling.

Review Results

  1. In the Analysis Workbench, select > Displacement > Displacement Magnitude.
    The Legend and the Load History dialog appear in the modeling window.

    The load steps where instability occurs are highlighted in red in the Load History dialog. You can click any step to view the deformed shape at the associated load percentage.

  2. Click (Show history graph) to view a plot of the displayed response history.
  3. Click (Animate history) to animate the load history step by step.
    You can change the speed of the animation by increasing/decreasing the value in the Animation speed box.
    Note: Make sure the Show deformed shape function is activated when animating the history.
  4. Close all results dialogs.

View Reaction Forces

  1. In the Analysis Workbench, click (Reaction/contact force).
  2. In the Supports tab, select Immovable 1.
  3. For Reactions, select Force Magnitude from the drop-down menu.
  4. Click Evaluate.
    A plot appears showing the reaction force magnitude at Immovable 1 at each increment.

    The plot shows a significant drop in reaction force when buckling occurs.

  5. Optional: Click Save as to save the plot as an image or the data as a text file.