STAAD.Pro Help

M. To explicitly define damping values for modes

To define damping values for modes for use with dynamic analysis, use the following procedure.

  1. On the Loading ribbon tab, select the Modal Damping tool in the Dynamic Specifications group.

    The Modal Damping dialog opens.
  2. Select the Explicit option.
  3. Type a Damping ratio to use for each mode number.
  4. Click OK.