Engineers use response spectrum analyses to determine the structural response to sudden forces or shocks such as from an earthquake. Input spectra are often specified within building codes for particular geographic regions and are based on information gathered from past earthquakes.
- This tutorial uses the results from the Truss Tower Natural Frequency - Modal Analysis tutorial. If this tutorial was not completed use the file Truss Tower Modal Results.ach in your tutorial models folder.
- A 15 Hz displacement vs. period input spectrum will be applied to the base of the tower.
- The input spectrum will be applied equally in all three global directions.
- A damping ratio of 0.05 will be used.
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