ALPHAD, VALUE
Defines the mass matrix multiplier for damping.
Compatible Products: – | – | Premium | Enterprise | Ent PP | Ent Solver | DYNA
Notes
This command defines the mass matrix multiplier 
used to form the viscous damping matrix 
, where 
is the mass matrix.
Values of 
can also be input as a material property (MP,ALPD or
TB,SDAMP,,,,ALPD). If ALPD in either form is included, the ALPD value is
added to the ALPHAD value as appropriate. (See Material Damping in the Mechanical APDL Material Reference and Damping Matrices in the Mechanical APDL Theory Reference.) Damping is not used in static (ANTYPE,STATIC)
or buckling (ANTYPE,BUCKLE) analyses.
This command is also valid in PREP7.