Please locate the ls-dyna input file writen by WB LS-DYNA. It should be in the solution directory (right click soluton > open solver directory > input.k). Please check *DEFINE_FUNCTION cards in the file. Most likely you have multiple *DEFINE_FUNCTION cards with same name (hpres) and ls-dyna solver is triggering an error. Function names should be unique. I think WB is using same function name for all objects defined for hydrostatic pressure.Â
A workaround is to just add one object and for the second one, use keyword snippet to manually added *LOAD_SEGMENT and *DEFINE_FUNCTION cards while making sure function name is unique.Â
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