連続体シェル要素を用いたXFEMによる応力解析手法の開発

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  • Development of stress analysis method based on XFEM using continuum shell elements

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<p>In this study, a stress analysis method based on the extended finite element method (XFEM) to effectively model cracks in thin-walled lightweight structures is developed. More specifically, a method based on XFEM using continuum shell elements, which can model cracks independently of elements, is proposed. In the method, the crack is expressed implicitly by the level set method using two kinds of signed distance functions, and a cohesive zone model is introduced to the crack to model matrix damage. This paper shows a formulation of enriched continuum shell elements, an outline of the developed code referred to as NLXSC8, and numerical results for verifications.</p>

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