*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)

[ 1 s ]
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.