Finite element analysis (FEA)

A computational method for predicting a system's performance by discretizing the system into a large number of small connected elements (somewhat like a jigsaw picture puzzle) and analyzing the interactions among of these elements. FEA can be used to analyze acoustic systems (e.g., ultrasonic resonators), thermal systems, fluid systems, electromagnetic systems, and many more. Multimodal analyses are possible (e.g., applying electrical excitation to piezoelectric ceramics for which the resulting mechanical motion can then be determined).

Also called "finite element method", FEM.

Also see lumped spring-mass resonance analogy.