WTMASS

Description	Type	Default
Global mass matrix scaling factor. The terms of the global mass matrix are multiplied by the value of WTMASS when they are generated. This parameter is used when material density is input in weight instead of mass units. It does not affect loads generated by GRAV or RFORCE Bulk Data entries or mass properties calculated by the Grid Point Weight Generator. The value of WTMASS is calculated using the relation: where, is mass or mass density is acceleration of gravity is weight or weight density	Real	1.0

Description

Type

Default

Global mass matrix scaling factor. The terms of the global mass matrix are multiplied by the value of WTMASS when they are generated. This parameter is used when material density is input in weight instead of mass units. It does not affect loads generated by GRAV or RFORCE Bulk Data entries or mass properties calculated by the Grid Point Weight Generator. The value of WTMASS is calculated using the relation:

where,

is mass or mass density

is acceleration of gravity

is weight or weight density

Real

1.0