LS Dyna

LS Dyna


    • king79


      I am trying to model the interaction between two parts using *CONTACT_ENTITY in Ls-Dyna. I keep getting the following error message:

       *** Error 20953 (STR+953)

         entity number= 1 local X vector has zero length.

      *** Error 20954 (STR+954)

         entity number= 1 local Y vector has zero length.

        *** Error 20018 (STR+18)

         input phase completed with 2 fatal errors

      I have checked the Ls-Dyna manual but cannot find a solution to this problem. Do you have any suggestions? Thanks

    • tslavik
      Ansys Employee
      You must define local axes on Cards 3 and 4 of *CONTACT_ENTITY with the variables AX, AY, AZ and BX, BY, BZ. Presently, it seems they are defined as "0" or otherwise invalid. Please refer to Remark #3 of *CONTACT_ENTITY for more details.
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