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LS Dyna

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

Use mat 181 in ALE contact

    • Pierre Gardère
      Subscriber

      Hello everyone,

      I'm trying to simulate an explosion with ALE contact (type Lagrangian_in_solid, ALE_Multi_Material_Group) on a simple mesh box. But I get a strange error message when I start a job:

      *** Warning 21292 (STR+1292)
           Load curve ID 37 of *MAT_SIMPLIFIED_RUBBER/FOAM ID 1
            covers only the tensile range. It should include both the
            tensile & compressive range to ensure it describes the
            complete range of loading

       *** Warning 21293 (STR+1293)
           The abscissa for load curve ID 38 used for material ID 181
           is decreasing. This is not permitted and may result in strange behavior.

      I had already used mat_181 with the same stress-strain curves without control_ALE, and it worked. Do you have any idea how I can solve this problem? When I start a job with a simple curve in the mat_181 and no table to define the load curve. I don't get this error message.

      Thank you for your understanding. 

    • Reno Genest
      Ansys Employee

      Hello Pierre,

      Ansys employees are not allowed to answer explosion questions on the Ansys Forum. If you are a commercial customer, please create a support case:

      customer.ansys.com

      Maybe another user will be able to help you.

       

      Reno.

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