Mass direction(Global Csys.)

Specify the directional component for consideration of the converted mass. When conducting analysis that considers earthquake effects (Response spectrum analysis, Time history analysis using earthquake data), the lateral behavior is mainly considered and the selected X,Y generally ignores the perpendicular direction mass component. However, for driving or floor slab vibration analysis, the gravitational direction dictates the dominant vibration mode and the Z direction is selected. Thus, the mass consideration direction is set to fit the purpose of the analysis type.

Static Load Type for Converting

Select the static load set to convert and select the force, beam load and pressure load information in the selected static load set for conversion. The scale factor during load-mass conversion can be considered and the gravitational acceleration value applied in the conversion is specified.