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Difference between coupling CP and constraint euqation CE

Difference between coupling CP and constraint euqation CE

Difference between coupling CP and constraint euqation CE

Hi All,

Do you know, what is the difference between coupling CP and constraint equation CE (e.g. RBE3] ?


RE: Difference between coupling CP and constraint euqation CE

In short

CP-Directly Couples the node to node degrees of freedom(Equation is DOF(1st node)=DOF(2nd node). The prime node's dof during matrix formulation are used and dof's of other node ignored.

CE-Couples node to node degrees of freedom using equations like Coef1 * DOF1 + Coef2 * DOF2 + Coef3 * DOF3 + ... = Constant. Master node dof's are independent and slave nodes dof's are dependent. Rigid connection.

RBE3-Same as CE. But slave node dof's are independent and Master nodes dof's are dependent. Not rigid connection.

Please go through following links for more and precise information.

thread569-310826: CERIG, CP, etc. and RBE2's, RBE3's.

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