Run Modal Analysis - Autodesk 466B1-05A761-1304 - AutoCAD Inventor Simulation Suite 2010 Getting Started Manual

When ready, click Run to start the simulation calculations.

Run Modal Analysis

In addition to the stress analysis, you can perform a modal frequency analysis
to find the natural frequencies at which your part vibrates, and the mode
shapes at those frequencies. Like stress analysis, modal analysis is available in
the stress analysis environment.
You can do a natural frequency analysis independent of a stress analysis. You
can do a frequency analysis on a prestressed structure, in which case you can
define loads on the part before the analysis. You can also find the natural
frequencies of an unconstrained model.
Workflow: Run a modal analysis
1 Enter the stress analysis environment.
2 Start a new simulation, specifying Modal Analysis as the simulation type.
3 Verify that the material used for the part is suitable, or override the
unsuitable with appropriate materials.
4 Apply the necessary constraints (optional).
5 Apply any loads (optional).
6 Make adjustments to the mesh settings and preview the mesh (optional).
7 Click Simulate and in the dialog box, click Run.
The results for the first eight frequency modes are inserted under the
Results folder in the browser. For an unconstrained part, the first six
frequencies are essentially zero.
8 To change the number of frequencies displayed right click the Simulation
node (near the top of the browser), and select Edit Simulation Properties.
In the dialog box specify the number of modes to find.
After you complete all the required steps, the Update notification is
displayed in the browser beside those sections that need updates.
Right-click the node and click Update. On the Results node, right-click
the node and click Simulate.
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