Geoffrey Irving <[email protected]> writes: > To make sure I understand, by "terrible" you mean only nth order > accurate, where n is the order of the material finite elements, right? > I.e., exactly as terrible at finite elements are at resolving > deformed geometry? Is there some additional badness about > isoperimetric?
Yes, but for engineering applications such as turbomachinery, even very small deviations from conic cause a big disruption (e.g., locking in a bearing, destabilization in milling). Isoparametric (where did this other spelling come from?) elements are plenty practical in many application areas, including some places that are representing conic sections.
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