question about Rayleigh Damping Command

Forum for OpenSees users to post questions, comments, etc. on the use of the OpenSees interpreter, OpenSees.exe

Moderators: silvia, selimgunay, Moderators

Post Reply
2015James
Posts: 31
Joined: Wed Dec 29, 2010 2:57 am
Location: hit

question about Rayleigh Damping Command

Post by 2015James »

hello, everyone:
I want to use the Rayleith Damping command, but i am confused how to identify the coeficients $betaK and $betaKcomm .
D = $alphaM * M + $betaK * Kcurrent +$betaKinit * Kinit + $betaKcomm * KlastCommit

the coefficients $alphaM and $betaKinit are constants all the time, but $betaK and $betaKcomm will change every step of analysis. So should anlyze 1 step and then identify the $betaK and $betaKcomm in a loop until the analysis is over? Thank you for your patience.
amir70007
Posts: 58
Joined: Sat Sep 20, 2008 11:13 pm
Location: Tehran-Amir Kabir University of Technology (Tehran Polytechnic)
Contact:

Re: question about Rayleigh Damping Command

Post by amir70007 »

Post Reply