Mass and Moment of Inertia (Rigid Material)

Use the subnode to add an effect of associated abstract rigid domain, which is physically not modeled and whose inertial properties are known. These inertial properties can be specified at an arbitrary point in space, which is assumed to be the center of gravity of this extra mass. The moment of inertia tensor that you specify is interpreted in the selected coordinate system.

Here you specify the location of the center of mass for the contribution given in this node. Select an option from the list: , , or.

•

For , the location of the load is taken as the center of rotation as defined in the parent node.

•

For select an — , , or .The available choices depend on physics interface and geometrical dimension. The center of mass is located at the centroid of the selected entities, which do not need to be related to rigid domain itself. As a special case, you can select a single point, and thus position the mass at that point

	Once chosen, a default Center of Mass: Boundary, Center of Mass: Edge, or Center of Mass: Point subnode is automatically added.

•

For , enter the ,Xm, in the table.

Select the check box to add an optional offset vector to the definition of the location. Enter values for the offset vector Xoffset.

The center of mass used is the sum of the vector obtained from any of the input methods and the offset vector.

Enter values or expressions for the m. Then for the the axis directions of the moment of inertia tensor are given by the selected coordinate system.

•

For 3D components, select ,, or and enter one or more components for the tensor I.