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A simple question for COMSOL v3.5a

Posted Apr 22, 2013, 10:54 a.m. EDT RF & Microwave Engineering Version 3.5a 0 Replies

Zhangxian Deng
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Hello,

I am now trying to use the femlin() in COMSOL v3.5a. According to the documentation, [Ke,Le,null,ud] = femlin(fem);
Ke and Le are the stiffness matrix and load vector. null is the matrix represents the transformation between constraint and unconstraint system. But what is ud?

u = u0 + Ke/Le + ud. Is it the rigid body displacement?

Thanks

Dan
0 Replies Last Post Apr 22, 2013, 10:54 a.m. EDT
COMSOL Moderator

Hello Zhangxian Deng

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