Submodeling is a finite element technique that you can use to obtain more accurate results in a particular region of a model. A finite element mesh may be too coarse to produce satisfactory results in a given region of interest. The results away from this region, however, may be satisfactory.

Reanalyzing the entire model using a greater mesh refinement in order to obtain more accurate results in one particular region is time-consuming and costly. Instead, you can use submodeling to generate an independent, more finely meshed model of only the region (submodel) of interest and then analyze it.