If a subsequent MSUP analysis will be performed (for example, a modal superposition transient, harmonic, spectrum or PSD analysis after modal analysis), write the element result to the mode file for use in the expansion pass in the subsequent analysis (MXPAND,,,,,,YES).

The Residual Vector Method is recommended in the subsequent MSUP analysis if the excitation is known prior to a modal analysis. The residual vector may be insignificant if sufficient modes are extracted.