*DAMPING_GLOBAL

LS-DYNA Input Interface KeywordUsed to define the Rayleigh mass and stiffness damping coefficients for the entire model.

Format

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
*DAMPING_GLOBAL
	Alpha	Scale_X	Scale_Y	Scale_Z	Scale_XX	Scale_YY	Scale_ZZ

Definition

Field	Contents	SI Unit Example
Alpha	Mass damping coefficient. (Real)	$\left[\frac{\text{1}}{\text{s}}\right]$
Scale_X	Scale factor for translational degree of freedom (DOF) in X direction. (Real)
Scale_Y	Scale factor for translational degree of freedom (DOF) in Y direction. (Real)
Scale_Z	Scale factor for translational degree of freedom (DOF) in Z direction. (Real)
Scale_XX	Scale factor for rotation degree of freedom (DOF) in X direction. (Real)
Scale_YY	Scale factor for rotation degree of freedom (DOF) in Y direction. (Real)
Scale_ZZ	Scale factor for rotation degree of freedom (DOF) in Z direction. (Real)

Comments

1. This keyword maps to /DAMP.
2. If all scale factors are zero, the Alpha value is set in all directions.