Erik Kostson
Ansys Employee

Perhaps this helps also.

The actual absolute values of the displacement results (mode shape) do not mean anything in modal analysis, as these are scaled/normalised eigenvectors/mode shapes.
Only the frequency and the overall mode-shape are of interest (so if the mode shape is bending, torsional, etc), but not the absolute/actual values of the displacements.

See the help manual (search for mass normalized), and our course for more info on this
Also this helps:

All the best