LS Dyna

LS Dyna

Topics relate to LS-DYNA, Autodyn, Explicit STR and more

Need help on explicit dynamic simulation

    • Azyufito Azra Nasution
      Subscriber

      I have a struggle while simulating explicit dynamic. I want to make my design to be break at the thin part but it won't break even already have higher stress than the tensile strength. how to make it break with high force?

    • peteroznewman
      Bbp_participant

      In the image below is the default settings for Erosion Controls under Analysis Settings for Explicit Dynamics.

      If you want to see your part “break” then you must set the Geometric Strain Limit to the value of strain that corresponds to the Ulitmate Tensile Stress by dividing by Young’s Modulus or set it to the material property Elongation if you know that value.  The default setting of 1.5 is understood to be 150% strain and that is too large.

      Or you could change the erosion to be On Material Failure and add a Failure model to the material in Engineering Data.

    • Azyufito Azra Nasution
      Subscriber

      It worked, thank you so much for your help

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