Numerical Modeling Linked to Failure Analysis

Numerical modeling is a technique that uses mathematical models to represent phenomena in science and engineering. The models are expressed in differential equations and are numerically solved due to the complexity of analytical solutions. Finite Element Modeling (FEA, FEM, or MEF) is a numerical modeling technique that has become an essential tool in engineering, thanks to the power of processors and software offerings. However, using FEA without a solid knowledge base can lead to errors and inaccuracies. An FEA analysis consists of three phases: preprocessing, solution, and postprocessing. Preprocessing involves creating a 3D CAD model and generating a finite element mesh. It is important to apply criteria regarding the relevance of the details of the parts that should be included or suppressed in the CAD model, and to appropriately select the boundary conditions of the problem. The following stages require judgment and experience in selecting material properties and boundary conditions.