*DESIGN RESPONSE

Set this parameter equal to the output frequency of the response sensitivities. The output will always be written to the output database at the last increment. If this parameter is omitted, output will be written at every increment of the analysis. Set FREQUENCY=0 to suppress output of the response sensitivities. This parameter also controls the frequency of the sensitivity calculations for the total DSA formulation.

Include this parameter to indicate that a list of eigenmodes for which sensitivities are desired will be listed on the data lines. This parameter is valid only in a FREQUENCY procedure.

This parameter is relevant only in a transient dynamic (DYNAMIC) analysis.

Set TIME MARKS=YES (default) to write the design response and corresponding sensitivities to the output database at the exact times dictated by the TIME POINTS parameter.

Set TIME MARKS=NO to write the design response and corresponding sensitivities to the output database at the last increment of the step.

This parameter is relevant only in a transient dynamic (DYNAMIC) analysis.

Set this parameter equal to the name of the TIME POINTS option that defines the time point at which the design response and corresponding sensitivities are to be written. The time points specification can contain only a single time point.