Masses Based on Components (FEM mode)
Before you create a mass idealization that is based on a component, you must calculate mass properties for the component or the entire assembly. Perform the following steps in Creo Parametric:
1. Click > > 
Model Properties to open the Model Properties dialog box.
Model Properties to open the Model Properties dialog box.2. Click change adjacent to Mass Properties to open the Mass Properties dialog box.
3. Specify a value for density.
4. Click Calculate for the other fields in the dialog box to be calculated and populated.
5. Click Generate Report if you want to review the mass properties in a browser window.
6. Click Save to save the values of the mass properties for the component with the default name or Save As to specify another name for the .dat file generated.
7. Click OK.
Be sure to save the component so that the mass will be available for Creo Simulate.
 | For tips on alternative methods to assign mass properties before you create a mass idealization, see Guidelines for Assigning Mass Properties. For more information on mass properties, refer to the Fundamentals functional area of the Creo Parametric Help Center. |
Keep the following points in mind when using components for mass definitions in assembly mode:
• The component that you use to define your mass cannot contain volumes that will be meshed as solids during a FEM analysis.
• You can select a curve or surface on a master representation or a simplified representation. For information on simplified representations, refer to the Fundamentals functional area in the Creo Parametric Help Center.
• The component that you use to define your mass can be specified as excluded or substituted in the simplified representation. In this case, select the excluded or substituted component from the Model Tree when you define your mass.
• After you define a mass by component, you can confirm the values of the mass, moments of inertia, and center of gravity for the component by using object action or by right-clicking the mass item under Idealizations on the Model Tree and selecting the Info command. The moments of inertia and center of gravity are reported in terms of the component's WCS.
• The location of the selected point affects the analysis of your FEM mesh data. If the point you select for your mass idealization coincides with the center of gravity of the component, you can output mesh data to the ANSYS or MSC/NASTRAN solvers.
• If the point you select for your mass idealization does not coincide with the center of gravity of the component, you can only output the idealization to the NASTRAN solver. You cannot use the other FEM solvers with this type of mass idealization. After you run the NASTRAN solver, you can view the center of gravity offset on the NASTRAN output.
Return to Mass Definition Dialog Box (FEM mode).