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LS Dyna

LS Dyna

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About modify the boundary conditions during the simulation

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    • April 23, 2024 at 2:22 am
      Jiawei CHEN
      Subscriber

      Hi,

      I am a student at the university of tokyo, and our lab have purchased a licence of dyna. 
      We want to realize some speical boundary condition using the user defined solver.

      Specifically, we want to change the ratio of MPC(Multiple Point Constraint), for example, 
      ux,1 - ratio * ux,2 = 0. Is it possible to modify the codes of compiled solver to realize this?
      For example, doing some implementation in dyn21.F, subroutine loadsetud, etc..
      Would you please give us some hints?

      Best,
      Chen

    • April 23, 2024 at 2:24 am
      Jiawei CHEN
      Subscriber

      More description for this problem:

      We want to update the ratio after every iteration in the implicit analysis.

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