CalculiX FEM

CalculiX (ccx) is an open-source FEM solver (GPLv2, no license). It reads Abaqus-style .inp decks and writes text .dat results plus .frd field output. ccx returns exit code 0 even on *ERROR, so never judge success by the exit code — the solver layer checks stdout for *ERROR and requires a data row in the .sta.

When to Use

Use this skill when an agent must run an open-source linear-static FEA analysis on CalculiX: parse/inspect a .inp deck, tune section/material/load parameters, solve with ccx, read .dat results, or export a viewer-renderable result. For commercial solvers (Abaqus/Ansys), use those solvers' own skills instead.

Workflow