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Can I change damping for response spectrum analysis without modifying the response spectrum curve?

April 26, 2017analysis curve damping modifying Response spectrum

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Can I change damping for response spectrum analysis without modifying the response spectrum curve?

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Extended Question: We are running a response spectrum analysis for a structure and wanted to increase the structure damping. Currently we only have a 5% damping response spectrum from the geotech. Is there a way to increase the structure damping without changing the response spectrum? Answer: Yes, this is possible. The program enables you to specify response spectrum function damping ratio and modal damping ratio. Increasing the modal damping ratio can be used to increase the damping without the need to change the response spectrum function. See Damping in response spectrum analysis page for additional information.