Running a Modal Simulation—Creo Simulation Live
Use modal analyses to calculate the natural frequencies and mode shapes of your model. Based on the natural frequencies and mode shapes you can modify your model by changing the stiffness or mass of the model.
Simulation Inputs
To run a modal simulation you must define the following minimum inputs:
• A material for the model.
• Optionally, one of the following displacement constraints:
◦ A displacement constraint for one or more surfaces.
◦ One or more surfaces designated as fixed supports.
To Run a Modal Simulation
1. Open a model or create a new model. Click Live Simulation to open the Live Simulation tab.
2. Define a material for the model if there is no material assigned.
3. Click 
Add Simulation 
to add a new modal analysis study to the model.
Add Simulation to add a new modal analysis study to the model.4. (Optional Step)—Click > > to open the Simulation Options dialog box. Specify the number of modes (between 1 and 12) or retain the default value of 6. For unconstrained models the first six modes are rigid body modes in the 3 translational and 3 rotational directions. The next six modes are the natural frequencies of the model. For a fully constrained model there are no rigid body modes.
5. Select a surface and define a constraint for it.
6. Click 
Simulate to start live simulation.
Simulate to start live simulation.7. A fringe of the results are displayed almost instantaneously in the graphics window. Select the result quantity that you want to view from the result legend.
8. Change the model geometry, boundary conditions, loads, material, or result options. The result fringe plot updates instantly in the graphics window.