Submodeling Analysis Using Recovered Stresses by Superconvergent Patch Recovery Method as Driven Variables

概要

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Submodeling method is used to achieve efficiency in finite element analysis when details are required in sub-regions of a large structure. Various implementations of this technique can be found in literature, and in most of them displacements are driven variables. That because, first, displacements constraints are easy to be implemented, and second, displacements are generally more accurate than stresses for raw finite element solution. However, by using recovery procedure, the accuracy of stresses can be improved significantly, therefore, in this paper, recovered stresses will be employed as driven variables. Stress method and displacement method are compared in numerical investigation. It will be shown that there do exist situations where using stresses as driven variables may lead to better result than using displacements.
社団法人日本船舶海洋工学会の論文
2001-08-31