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imancivil
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by imancivil » Fri Feb 15, 2008 6:55 am
Hi All,
I am using rayleing damping for my model, so it has alpha and beta. But there there are other 2 parameters in rayleigh command ($betaKinit $betaKcomm) what are "stiffness matrix at initial state determination" and "stiffness matrix at last-committed state determination".
Is there any reference to explain them?
Thanks
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silvia
- Posts: 3909
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by silvia » Fri Feb 22, 2008 10:44 am
for the stiffness-proportional damping, which stiffness do you want it to use?
if you don't know, just go with the initial one.
Silvia Mazzoni, PhD
Structural Consultant
Degenkolb Engineers
235 Montgomery Street, Suite 500
San Francisco, CA. 94104