SS-T: 4080 Transient Analysis

Run Dynamic Transient Analysis in SimSolid.

Purpose
SimSolid performs meshless structural analysis that works on full featured parts and assemblies, is tolerant of geometric imperfections, and runs in seconds to minutes. In this tutorial, you will do the following:
  • Create Dynamic Transient Analysis.
Model Description
The following model file is needed for this tutorial:
  • Transient.ssp


Figure 1.
This file has the following specifications:
  • Material is set to Steel for all parts.
  • Regular connections with 2.5mm gap and 1.2mm penetration tolerance.

Open Project

  1. Start a new SimSolid session.
  2. On the main window toolbar, click Open Project .
  3. In the Open project file dialog, choose Transient.ssp
  4. Click OK.

Create Modal Analysis

  1. On the main window toolbar, click the (Modal analysis) icon.
  2. In the popup Number of modes window, specify the number of modes as 9.
  3. Click OK.
    The new modal analysis appears in the Project Tree.

Create Immovable Contraint

  1. In the Analysis Workbench, click Immovable Support .


    Figure 2.
  2. In the dialog, verify the Faces radio button is selected.
  3. In the modeling window, select the faces shown in Figure 3.


    Figure 3.
  4. Click OK.

Run Analysis

  1. In the Project Tree, open the Analysis Workbench.
  2. Click (Solve).

Review Results

  1. In the Project Tree, Select the Modal 1 subcase.
  2. On the Analysis Workbench, select > Displacement Magnitude.
    The Legend window opens and displays the contour plot. The Frequency (Hz) window opens and lists the modes.


    Figure 4.
  3. View the mode shapes.
    1. In the Frequency (Hz) window, highlight a mode in the list.
    2. In the Legend, click (Start animation).
    3. Cycle between the other modes in the list.

Create Transient Analysis

  1. On the main window toolbar, select > Trasient.
    The Transient dynamics setup dialog oprnd and automatically links to the Modal analysis results.


    Figure 5.
    Note: If multiple Modal analyses with results are present in the design study, you must create the link manually. An example is shown in Figure 6.


    Figure 6.
  2. In the setup dialog, for Time in seconds, enter 2.
  3. Select the Modal damping tab.
  4. For Default damping ratio, enter 0.03.
  5. Click OK.

Create Time Function

  1. In the Project Tree, click on the Assembly branch to open the Assembly workbench.
  2. On the workbench toolbar, click the (Time function) icon.
  3. In the Time functin dialog, click Standard.


    Figure 7.
  4. In the Standard time functions dialog, setup the function.
    1. For Function type select Triangle from the drop-down menu.
    2. For Amplitude, enter 1.
    3. For Start, enter 0.
    4. For Duration, enter 0.5.
    5. For Period, enter 1.
    6. Click OK.

Define Load

  1. In the workbench toolbar, select > Force/Displacement.


    Figure 8.
  2. In the dialog, select the Spot radio button.
  3. Select the spot as shown in Figure 9.


    Figure 9.
  4. Under Total force or displacement along axes, for Z enter -5000.
  5. Click OK.

Run Analysis

  1. In the Project Tree, open the Analysis Workbench.
  2. Click (Solve).

Review Results

  1. In the Project Tree, Select the Dynamic transient 1 subcase.
  2. On the Analysis Workbench, select > Displacement Magnitude.
    The Legend window opens and displays the contour plot. The Dynamics time response window opens. You can use the slider to change the time at which the result is being displayed.


    Figure 10.
  3. In the Dynamics time response dialog, click Show at peak to view the maximum deformed shape and its contour.
  4. Click to animate the model.