Did I get something wrong about damping in "Harmonic Response"

lennard

Hi,

I investigate the harmonic response on a structure with a Model I didn't create myself.
I computed the Modal Analysis with this settings:
Damped Yes
Solver Type Reduced Damped
Mode Reuse Programm Controlled
Store Complex Solution No

In "Harmonic Response" I chose "mode superstition" and set the damping ratio to 7,5 e-03.
In further investigations I changed the value of the damping ratio by x10. The result changed just about <1%. What am I doing wrong?

Thanks a lot!!
Lennard

Pernelle Marone-Hitz

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