LS Dyna

LS Dyna

forrtl: severe (157): Program Exception – access violation

    • Emre Guney


      I encountered this error when I started a simulation.

      forrtl: severe (157): Program Exception - access violation

      There is no error in the message file.

      As seen below, I am getting a negative value related to the added mass.
      Could the problem be caused by this?
      If not, what could be the reason for this?

      Below are the timestep values I entered in the .k file.

      $#  dtinit    tssfac      isdo    tslimt     dt2ms      lctm     erode     ms1st
             0.0       0.9         0       0.0-3.2000E-7         0         0         0
      $#  dt2msf   dt2mslc     imscl    unused    unused     rmscl     emscl      ihdo
             0.0         0         0                           0.0                   0


    • Andreas Koutras
      Ansys Employee


      The error seems to be related to the contacts.

      Indeed DT2MS<0 is recommended over a positive value. If you specify DT2MS=0, does this error still occur?

      What is your LS-DYNA version?


      • Emre Guney

        Hello Andreas,

        Thanks for your feedback

        When I specify DT2MS=0 I get solution. However, the solution time is taking too long. (About 11 days). Previously, I determined DT2MS and solved similar projects(number of mesh, contact type, material etc.) within 1-2 days.

        My version of Ls Dyna is R11.2.2

Viewing 1 reply thread
  • You must be logged in to reply to this topic.