Click Measure > Inspect > Mass Properties.With the Select Body tool guide active, select a solid
in the Structure
tree or by triple-clicking it in the Design window to display its
volume, center of mass, and principal moments and axes.
A small origin appears at the center of volume with its axes oriented in the
direction of the principal axes. To calculate the principal moments and axes for
another point, hold Alt and select an origin to add it to
your selection.To calculate the actual moment of inertia, multiply the moment measurement by
the density of the
solid.The axis is indicated with x, y, z values. In the figure above, these values
are (0, -1, 0). The first number is the red axis of the origin, the second is
the green axis, and the third is the blue axis.
For beam objects ensure that the Material Name property
is set as appropriate to display the mass and center of mass properties in
addition to the volume.
.