Last seen: November 25, 2025 7:59 pm
@dummy-error if you are going to calculate HIC, you need to make sure head acceleration is in G's. You are seeing huge HIC values because you are calc...
@djsburra I know that this is a frustrating issue. I believe that it is primarily due to some issue within the model. What version of LS-Dyna are you ...
@dummy-error what are your units for acceleration?
@peterr what type of material is the part that is collapsing? I know some tricks that can help prevent elements from collapsing for certain material m...
@viky113 If you are trying to validate the response of a physical setup, then I really think that the best way to approach this would be to attempt to...
Hey @pjay, Great question. To start, yes you can filter time history data and export it with the filtering. In the plot window, go to the Filter ta...
@pjay Yeah I know the crashes can happen. It’s really version dependent. You could always try to download a couple different versions of Prepost to se...
@manoz21 Okay so it has nothing to do with contacts then. What material model are you using? (ex. *Mat_piecewise_plasticity) And what type of mesh is ...
@arafat_alam great! Glad to hear it.
@pjay Have you tried using the Fringe Component "Ndv" and then x, y, or z coordinate for any point in your simulation? At any point you should be give...
@sonlong Okay so in LS-Prepost, go to the Element Tool tab -> Transformation -> select rotate at the top of the new window. Your small selection...
@dummy-error Sorry, I didn't mean to ask about force response as you are only looking at HIC. Another thing you can do to spot check the different sim...
Hi @peterr, It can be a multitude of issues. Does it seem like the model works for a little while, then fails? Or is it just really unstable from t...
@arafat_alam see I think that I'm getting confused. You are importing CAD created in Ansys but you say that it contacts elements. I don't work with An...
@viky113 1. If you connect the plates to the sled with beams or some other type of mesh then you would only apply the motion to the sled. The plates w...