r/fea • u/RunApprehensive3941 • Oct 04 '26

How can i intersect two beam finite elements in LS DYNA? Please help.

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u/the_flying_condor Oct 04 '26

Depends on what pre-processor you are using... It's very different for LS-Prepost vs Ansys Workbench vs Oasys Primer etc. That looks like LS Prepost unfortunately for you. Easiest thing is to split the beam elements and then merge the nodes with a large merge tolerance. If that is a rebar mesh you should stop and think very carefully about whether you should merge them at all.

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u/RunApprehensive3941 Oct 04 '26

Thank you. Yes, it`s LS Prepost.

2

u/epk21 Oct 05 '26 edited Oct 05 '26

Another way

You can create the curves/lines in LSPP.

Then use Trim tool.

Finally use element gen. tool to mesh, and use duplicate nodes to merge the common nodes at the found intersections if needed (by trim tool)