Helpful Hints and Tips: Case Study on the Influence of Element Mapping and p-Discretization
In this case study, a 3D tie rod under bearing loads was analyzed (CAD courtesy of Digital Engineering). The influences of 1) converting element mapping from isoparametric to geometric and/or 2) assigning p-discretization on the peak stress and solver time was documented. Element mapping was considered both on all elements and a subset in the region of interest, and p-discretization was considered on elements outside the region of interest to reduce solver time.
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“Accurate and reliable stresses and Stress Intensity Factors are required for determination of static and residual strength and for crack growth analyses in analysis tools such as AFGROW. For some geometries, industry solutions are either insufficient or nonexistent. The geometry, applied forces, and crack shapes and dimensions must be modeled reasonably well to obtain useful engineering data. The p-version finite element software StressCheck® (ESRD, Inc., St. Louis, Missouri, USA) is used to demonstrate how accurate finite element solutions can lead to good quality engineering analysis.”