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calculix-fem

Workflow skill for driving the CalculiX MCP server over .inp decks — model inspection, in-place design-variable edits, ccx solve, .dat result reading, and result_mesh.json export for the viewer. Use when an agent must run an open-source linear-static FEM analysis on CalculiX, tune section/material/load parameters, or produce a viewer-renderable result.

Skill/calculix/calculix-fem/SKILL.md

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License
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# 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.