SPDAMP

SPDAMP, TBLNO, CURVNO, DampRatio
Defines input spectrum damping in a multi-point response spectrum analysis.

SOLUTION: Spectrum Options
Compatible Products: – | – | Premium | Enterprise | Ent PP | Ent Solver | –

TBLNO

Input table number. Corresponds to the frequency table number (TBLNO on the SPFREQ command).

CURVNO

Input curve number. Corresponds to the spectrum values curve number (CURVNO on the SPVAL command).

DampRatio

Damping ratio for the response spectrum curve. Up to 20 different curves may be defined, each with a different damping ratio. Damping values must be input in ascending order.

Notes

Defines multi-point response spectrum damping value to be associated with:

  • Previously defined frequency points (SPFREQ).

  • Subsequently defined spectrum points (SPVAL).

Damping values are used only to identify input spectrum values for the mode coefficients calculation.

The curve number must be input in ascending order starting with 1.

This command is also valid in PREP7.

Menu Paths

Main Menu>Preprocessor>Loads>Load Step Opts>Spectrum>MultiPt>Spect vs Freq
Main Menu>Solution>Load Step Opts>Spectrum>MultiPt>Spect vs Freq

Release 18.2 - © ANSYS, Inc. All rights reserved.