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Discuss installation & licensing of our Ansys Teaching and Research products

Ls-dyna automatic surface to surface contact

    • Fady Elshazly



      I have a model solved explicitly with no errors. I tried to solve the model implicitly but it gives the attached error. I beleive it is may be related to an automatic surface to surface contact i have in the model since when i remove the contact, the model solves normally. What would cause this error? and what should i do to solve this? 



    • Andreas Koutras
      Ansys Employee

      Hello, please try with adding the MORTAR option in the contacts. The MORTAR contacts are primarily intended for implicit analysis.

      Here is also a checklist for implicit analysis:

      However, this may not help to prevent the error you see.  It seems ls-dyna cannot allocate the required memory.

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