alphad

DynamicOptions.alphad(value='', **kwargs)

Defines the mass matrix multiplier for damping.

Mechanical APDL Command: ALPHAD

Parameters:

valuestr

Mass matrix multiplier for damping.

Notes

This command defines the mass matrix multiplier \(equation not available\) used to form the viscous damping matrix \(equation not available\), where \(equation not available\) is the mass matrix.

Values of \(equation not available\) 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 Damping Matrices antype,STATIC) or buckling ( antype,BUCKLE) analyses.

This command is also valid in PREP7.