what's the difference between PDelta and Corotational

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chriswu
Posts: 7
Joined: Sat May 30, 2009 3:46 am
Location: South China Univ. of Tech.

what's the difference between PDelta and Corotational

Post by chriswu »

hey all,
as mentioned, what's the difference between PDelta and Corotational?

the manual only described that :
P-Delta Transformation performs a LINEAR geometric transformation of beam stiffness and resisting force from the basic system to the global coordinate system, considering second-order P-Delta effects.
Corotational Transformation performs an EXACT geometric transformation of beam stiffness and resisting force from the basic system to the global coordinate system.

any detail description about the difference? :)
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vesna
Posts: 3033
Joined: Tue May 23, 2006 11:23 am
Location: UC Berkeley

Re: what's the difference between PDelta and Corotational

Post by vesna »

look at this post:
http://opensees.berkeley.edu/community/ ... =2&t=24584
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chriswu
Posts: 7
Joined: Sat May 30, 2009 3:46 am
Location: South China Univ. of Tech.

Re: what's the difference between PDelta and Corotational

Post by chriswu »

vesna wrote:
> look at this post:
> http://opensees.berkeley.edu/community/ ... =2&t=24584
thank you, vesna
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