Use the Point Mass node to model a discrete mass or mass moment of inertia that is concentrated at a point.
With the Coordinate system list, control the coordinate system around the axis of which the principal mass moments of inertia are defined.
Enter a single value for an isotropic Mass moment of inertia J, or select
Diagonal or
Symmetric to enter a full moment of inertia tensor.
Enter a Mass damping parameter αdM. This is the mass proportional term of a Rayleigh damping.
Select the Exclude contribution check box to switch off the loads generated by this node when the frame is accelerated using a
Gravity,
Rotating Frame,
Linearly Accelerated Frame, or
Base Excitation feature. The setting will also determine whether the node will contribute when computing mass properties and participation factors.
