structure damping command

Syntax

structure damping keyword

Primary keywords:

combined-local    local    none    rayleigh

Set the structural element logic damping scheme. This command is depreciated. Use instead the command structure mechanical damping for static mode or structure dynamic damping for dynamic mode. The values of this setting can be printed using the structure list information command. The following keywords are available:

combined-local

sets the damping scheme used by the structural element logic to combined-local damping. The local damping constants are stored separately for each node and set by the command structure node damping-local.

local

sets the damping scheme used by the structural element logic to local damping. This is the default setting for static mode. The local-damping constants are stored separately for each node and set by the command structure node damping-local.

none

sets the damping scheme used by the structural element logic to no damping. This is the default setting for dynamic mode.

rayleigh f1 f2

sets the damping scheme used by the structural element logic to Rayleigh damping. The stiffness-proportional constant is f1 = beta, and the mass-proportional constant is f2 = alpha. This command must be used when the dynamic option is configured and turned on.