Tower Damping ratio

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Ruiliang.Wang
Posts: 81
Joined: Sun Nov 24, 2013 6:21 pm
Organization: YANSHAN UNIVERSITY
Location: China

Tower Damping ratio

Postby Ruiliang.Wang » Fri Jan 11, 2019 2:24 am

Dear Jason,

Recently I have some doubt about tower damping,Usually the steel have 0.005 damping ratio we setting in the model.But Some tower have lower concrete and upper steel. There are two kinds of materials. I do not sure how much the damping ratio shoud be in the model.
Could you give me some guide ?

Best Regards

Ruiliang.Wang

Jason.Jonkman
Posts: 3964
Joined: Thu Nov 03, 2005 4:38 pm
Location: Boulder, CO
Contact:

Re: Tower Damping ratio

Postby Jason.Jonkman » Fri Jan 11, 2019 8:13 am

Dear Ruiliang,

There is already some discussion about selecting tower damping on this forum, and in the absence of actual tower-decay measurements to calibrate against, I doubt I can provide more guidance than what has already been discussed.

Best regards,
Jason Jonkman, Ph.D.
Senior Engineer | National Wind Technology Center (NWTC)

National Renewable Energy Laboratory (NREL)
15013 Denver West Parkway | Golden, CO 80401
+1 (303) 384 – 7026 | Fax: +1 (303) 384 – 6901
nwtc.nrel.gov


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