FEA

CalculiX

Input-deck FEA support for CalculiX structural and thermal cases, material cards, loads, constraints, and report evidence.

Runtime contract
v2.23GPL-2.0-or-latersimpilot-solver-calculix
  • linear and nonlinear structural mechanics
  • thermal and thermomechanical material support
  • NAFEMS-style review flow through standards packs
  • input deck, mesh include, status, and convergence evidence as auditable artifacts
Setup and validation checklist
  • Verify the support set removes rigid body motion for the active structural dimensionality.
  • Prefer quadratic structural elements for the benchmark family unless the pack explicitly declares otherwise.
  • Confirm every section references a valid material and every output request lands inside the active *STEP.
  • Review .cvg/.sta outputs for convergence evidence before promoting the run to validation.
Resources, fields, and figures
5 knowledge packs3 field declarations2 figure bindings
  • ccx
  • gmsh
  • pyvista
  • cadquery
  • freecad
  • ccx/von-mises-stress
  • ccx/displacement-magnitude
  • ccx/sigma-yy
  • ccx.von-mises.contour
  • ccx.sigma-yy.point-d
Benchmarks and standards packs
ASME BPV VIII-2 Linear Elastic Review PackCalculiX NAFEMS LE1 elliptic membrane benchmark

Related term

CaseSpec

The typed source of truth for a simulation case — solver, physics, geometry, mesh, conditions, controls, QoIs, and report inputs.

Open term

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QoI

Quantity of interest — a value the case must extract, validate, and report.

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Terminal evidence

Captured command input, output, status, cwd, and timing proving what actually ran.

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Mesh-quality gate

A pre-solve check that mesh metrics satisfy the solver's and the case's fidelity assumptions.

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Solver pack

A solver integration package — materializes typed case state into solver-native files, commands, parsers, and evidence hooks.

Open term

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Resource pack

The manifest-like solver metadata read by tools, docs, help, validation, and reports.

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Standards pack

A typed report-policy bundle that adds mandatory sections, checklists, overlays, and signatures.

Open term

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Figure catalog

The typed registry binding figure roles to solver fields, viewpoints, and renderers.

Open term

Related doc

Typed Case State

The CaseSpec is the simulation contract. Everything else — solver files, runs, figures, reports — is derived.

Open doc

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How Solver Packs Work

The shared contract that lets OpenFOAM, SU2, and CalculiX plug into the same agent, validation, and reporting pipeline.

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Standards Packs

Author report policy as typed standards packs so docs, help, validation, and report generation never drift.

Open doc

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Figure Catalog

Bind figure roles to solver fields, viewpoints, and renderers so the viewer, docs, and report agree.

Open doc

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Evidence & Reports

How residuals, QoIs, figures, artifacts, citations, and review records compose into an audit-ready report.

Open doc