PARAM, ALPHA1
Bulk Data Entry Adds Rayleigh damping to viscous damping for structural mesh.
| Parameter | Values | Description |
|---|---|---|
| ALPHA1 | <Real> Default = 0.0 |
PARAM,
ALPHA1 is used in frequency response,
transient response and modal complex eigenvalue analyses. This
parameter is also supported for JOINTG with
JTYPE=SLIPRING in explicit
analysis. If PARAM, ALPHA1 and/or PARAM, ALPHA2 are not equal to zero, then Rayleigh damping is added to the viscous damping. ALPHA1 is the scale factor applied to the mass matrix and ALPHA2 to the structural stiffness matrix as in: [B' |