LS Dyna

LS Dyna

Topics related to LS-DYNA, Autodyn, Explicit STR and more.

Program Exception – Access Violation

    • javat33489
      Subscriber

      Hello everyone. I'm solving an impact problem. A steel cylinder impacts a CNG plate.
      When I calculate with MASSCALE D2TMS, everything works.
      If I remove the mass scale, I get an error:

           871 t 9.9996E-02 dt 1.15E-04 write d3plot file            10/27/25 17:51:10
          1741 t 1.9999E-01 dt 1.15E-04 write d3plot file            10/27/25 17:52:35
          2611 t 2.9999E-01 dt 1.15E-04 write d3plot file            10/27/25 17:54:15
          3705 t 3.9995E-01 dt 8.81E-05 write d3plot file            10/27/25 17:56:47
          4887 t 4.9998E-01 dt 6.33E-05 write d3plot file            10/27/25 17:59:39
          5000 t 5.0722E-01 dt 6.26E-05 flush i/o buffers            10/27/25 17:59:56
          7999 t 5.9999E-01 dt 1.69E-05 write d3plot file            10/27/25 18:07:35
         10000 t 6.1699E-01 dt 8.01E-06 flush i/o buffers            10/27/25 18:12:49
      forrtl: severe (157): Program Exception - access violation
      Image              PC                Routine            Line        Source
      lsdyna_dp.exe      00007FF7DCBB0408  BKSRT4A                 15470  fem3d_a.F
      lsdyna_dp.exe      00007FF7E2CA3198  ASLAV0R                 28402  dynpc.F
      lsdyna_dp.exe      00007FF7DFA3C15A  CONTACT                  2747  dyn33.F
      lsdyna_dp.exe      00007FF7DCC0E4E0  FEM3D_CONTACT           39418  fem3d_a.F
      lsdyna_dp.exe      00007FF7DCB4F840  FEM3D                   12147  fem3d.F
      lsdyna_dp.exe      00007FF7DCB42858  SOLTN                     441  fem3d.F
      lsdyna_dp.exe      00007FF7DCC7DC38  OVERLY                    277  dyn0.F
      lsdyna_dp.exe      00007FF7DB8047BF  LSDYNA1                   965  dynm.F
      lsdyna_dp.exe      00007FF7DB804129  MAIN__                   2060  dynm.F
      lsdyna_dp.exe      00007FF7E98BD3E2  Unknown               Unknown  Unknown
      lsdyna_dp.exe      00007FF7EA1D0358  Unknown               Unknown  Unknown
      KERNEL32.DLL       00007FF8EED8E8D7  Unknown               Unknown  Unknown
      ntdll.dll          00007FF8EF6AC53C  Unknown               Unknown  Unknown

      Why?
      Thanks.

    • Erik Kostson
      Ansys Employee

       

      Hi

      As you use often large models and realistic geometries you have likely a commercial licence. It is also impossible to say what the above error is caused by with out looking at the model – please send the licence number or TECS nr, together with a NON export controlled model, via a support ticket (ACCS system), or if you are supported by a channel partner in your region, so we can help you with this issue.

      All the best

      Erik

       

    • Erik Kostson
      Ansys Employee

      Hi

       

      Just wanted to check if you send your model to our support or your channel partner, and if so was it resolved?



      Thank you

      Erik

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