LS Dyna

LS Dyna

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

SPH particles scatter when the calculation time changes.

    • javat33489

      Guys, I got a clue to the cause of the particles scattering. I decided to create a new discussion, sorry.


      When I solve the problem in time for 0.0001 sec and turn off mass scaling then the calculation passes. Also, I don't have to add the CONTROL card



      If I make a task for 1 second and turn on mass scaling and define a timestep then the particles fly apart when the drill and particles come into contact

      In addition, I have to connect the CONTROL card with a snippet in order to increase the mass

      otherwise I get an error:

      Colleagues, tell me why this is happening?

    • Ashish Khemka
      Forum Moderator



      I think Ram helped you with this query here: SPH particles fly apart on contact with the drill (



      Ashish Khemka

      • javat33489

        Excuse me sir. This is a relatively new feature. Tell me how to include it in the LS-Dyna WB (ACT)?

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