FEA (Finite Element Analysis)
Finite Element Analysis (FEA) is the numerical method most commonly used within CAE for structural analysis and simulation. FEA discretizes a complex 3D geometry into millions of small finite elements (tetrahedra, hexahedra, etc.), applies boundary conditions (loads, constraints, material properties) to those elements, and solves the governing equations of solid mechanics (elasticity, plasticity, dynamics) to predict how the structure will deform, where stresses will concentrate, and whether the design will fail under the specified loads.
Why it matters
FEA is the standard way to predict structural performance without building a physical prototype. Stress concentration, fatigue life, vibration modes, buckling risk, thermal expansion — all can be predicted with FEA before a single part is cut. Industries with high failure costs (aerospace, pressure vessels, medical implants) rely on FEA validation to avoid recalls and safety incidents. Understanding FEA basics — mesh quality, element type, convergence, and validation against real-world test data — is essential for trusting simulation results.
External References
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Cite this definition
Finocchiaro, Michael. “FEA (Finite Element Analysis).” DemystifyingPLM PLM Glossary, 2026, https://www.demystifyingplm.com/glossary/fea-finite-element-analysis