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What is difference between Constraining nodes vs. rbe3?

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Hi,


 


thats are complete different things:


 


*constraints: is a boundary condition of type *BOUNDARY_SPC_NODE in LSDyna


*RBE3: is a element of type *CONSTRAINED_INTERPOLATION in LSDyna


 


*BOUNDARY_SPC_NODE is more or less equivalent to a SPC in Nastran / Radioss Bulk


*CONSTRAINED_INTERPOLATION is more or less a RBE3 element in Nastran / Radioss (but not the same)


 


Please refer LSDyna Manual for mor details.


 


Regards,


Mario

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