yp vector

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Amirsardar13
Posts: 36
Joined: Sat Dec 25, 2010 11:13 am
Location: unr

yp vector

Post by Amirsardar13 »

In definition of zero length elements, there is a yp vector. I am wondering if this vector is perpendicular to local x vector or not. And what is the difference between local yp and local y?
thanks
vesna
Posts: 3033
Joined: Tue May 23, 2006 11:23 am
Location: UC Berkeley

Re: yp vector

Post by vesna »

if local element axes coincide with the global axis you do not need to specify local x and yp vector.

Vector yp can be perpendicular to vector x but does not have to be. yp vector is any vector other than x that together with x defines local x-y plane for zeroLength element.
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