Introduction
The inertia measures are based on the density associated with the selection, and the density is defined as follow:
- either by the material applied to the selected element, see Material Definition User's Guide: Applying Materials .
- or by the default density defined in preferences.
- or from the declared weight of the selected element, see Weight Analysis User's Guide: Declaring Weight.
Important: - A declared weight of a null value is not taken into consideration; in this case weight and inertia are computed.
- If the declared weight is not computed in Weight Analysis, the center of gravity and the inertia matrix are not defined. This will generate an error or warning message during the computation of the assembly inertia.
- A covering material is accounted for if all of the body is covered.
- Surface where a thickness is applied are accounted for when no inertia covering thickness is specified, otherwise the inertia covering thickness overrides all existing surface thicknesses.
You can measure volume geometry or surface geometry.
Important: You can mix volume and surface geometries in the selection but only volume geometries are accounted for. |
To do this you can:
- Select exact or tessellated bodies in Volume mode, planes or surface features for Surface mode.
- Select exact or tessellated features.