Description: The default settings when applying damping controls in a substructure are now consistent with the defaults used in standard analysis step definitions: the default damping in a substructure includes a combination of all specified viscous and structural damping contributions.

Averaged stiffness and mass-proportional damping factors are no longer calculated during generation of a substructure; the default value for these factors is now zero. You can add stiffness or mass-proportional damping contributions to a substructure by directly specifying these factors as part of the substructure property definition.