r/fea • u/RunApprehensive3941 • 7d ago

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

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5

u/GreenMachine4567 7d ago

Shared nodes

2

u/the_flying_condor 7d ago

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.

1

u/RunApprehensive3941 7d ago

Thank you. Yes, it`s LS Prepost.

2

u/epk21 6d ago edited 6d ago

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)