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CAE Error Database

Category: Error Database | Updated: 2026-01-01
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I'm completely stumped by this error — "NEGATIVE PIVOT" — I have no idea what it means or what to do about it.

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You're not alone. CAE solver error messages are in English, packed with jargon, and give almost no guidance on how to fix them. That's exactly what this Error Database is for.

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So if I search my error message here, I'll find the cause and fix?

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Exactly. Everything is organized by error type — convergence failures, mesh errors, contact errors — and each article gives the diagnosis, probable root causes, and concrete resolution steps. Over 300 articles covering Abaqus, ANSYS, OpenFOAM, and Nastran.

Browse Error Categories

Select the category that matches your error type. Solver-specific search is available within each subcategory.

Convergence Errors
Solution not converging, residuals not dropping. Most common CAE error. Especially frequent in nonlinear, contact, and large deformation analyses.
Most Common
Mesh Quality Errors
Excessive element distortion, negative Jacobian, poor aspect ratio. Prevention strategies and repair methods.
Contact & Constraint Errors
Overconstrained models, contact penetration, unstable contact pairs. Debug techniques for assembly simulations.
Solver & License Errors
Memory overflow, matrix singularity, license failures, solver crashes. System-level troubleshooting guide.
Material Model Errors
Negative Jacobian from material definition, plasticity convergence issues, viscous regularization strategies.
Input/Output Errors
File format issues, missing input cards, import/export failures. Pre/post-processing troubleshooting.

Tips for Faster Error Resolution

Related Topics

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