# PARAM, KDAMP

Bulk Data Entry Enters viscous modal damping into the stiffness matrix as structural damping.

Parameter Values Description
KDAMP <-1, 1 >
-1
Modal damping is entered into the complex stiffness matrix as material damping.
1 (Default)
Modal damping is entered into the viscous damping matrix.

• Set the damping value (field ${g}_{i}$ ) in the TABDMP1 or TABDMP2 Bulk Data Entry equal to half of the value of PARAM, G (that is set the constant value to $C/{C}_{0}$ ).