What is difference between Constraining nodes vs. rbe3?

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

What is difference between Constraining nodes(directly from analysis->constraints)  vs. rbe3? I am trying to do tensile test using Ls-dyna solver. Please post your comments.

 

Tagged:

Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited August 2013

    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

Categories