![]() The first few iterations of a mesh refinement study of a wrench, starting with a very coarse mesh.Īfter computing the solution on the coarse mesh, the process of mesh refinement begins. Mesh refinement study of a wrench, with a varying mesh coarseness. It is important to keep this in mind during the modeling process, as there is no benefit in trying to resolve a model to greater accuracy than the input data admits. ![]() For instance, the material properties and loads may not always be precisely known. These inputs may have uncertainties in them. The analyst should also know all of the physics that are relevant to the problem, the materials properties, the loads, the constraints, and any elements that can affect the results of interest. Starting with a simple model and adding complexity is almost always easier than starting with a complex model and simplifying it. The analyst should put some engineering judgment into examining the CAD model and deciding if these features and details can be removed or simplified prior to meshing. A typical CAD model will accurately describe the shape and structure, but often also contain cosmetic features or manufacturing details that can prove to be extraneous for the purposes of finite element modeling. This geometry is represented via a CAD model. The Mesh Refinement ProcessĪ good finite element analyst starts with both an understanding of the physics of the system that is to be analyzed and a complete description of the geometry of the system. This process of mesh refinement is a key step in validating any finite element model and gaining confidence in the software, the model, and the results. As these elements are made smaller and smaller, as the mesh is refined, the computed solution will approach the true solution. These equations approximately represent the governing equation of interest via a set of polynomial functions defined over each element. ![]() The finite element mesh is used to subdivide the CAD model into smaller domains called elements, over which a set of equations are solved. The accuracy that can be obtained from any FEA model is directly related to the finite element mesh that is used. This information enables the prediction of real-world behavior, often with very high levels of accuracy. Inventor mesh enabler options not showing software#The use of FEA software begins with a computer-aided design (CAD) model that represents the physical parts being simulated as well as knowledge of the material properties and the applied loads and constraints. Physics, PDEs, and Numerical Modeling Mesh Refinement What Is Finite Element Mesh Refinement?Įngineers and scientists use finite element analysis (FEA) software to build predictive computational models of real-world scenarios. ![]()
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