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Evaluation on reproduction of priori knowledge in XFEM

机译:在XFEM中评估先验知识的再现

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摘要

The XFEM is a numerical method which employs an approximation including the priori knowledge of the solution by using the concept of enrichment in a local area. In this paper, the reproductions of the priori knowledge in the original XFEM and the PUFEM-based XFEM for the crack analysis were evaluated, respectively. The results showed that there is a serious lack of the reproduction of the priori knowledge in the local enrichment area close to the crack tip in case of the original XFEM. On the other hand, it was shown that the priori knowledge can be accurately reproduced over the entire enrichment in the PUFEM-based XFEM.
机译:XFEM是一种数值方法,它通过使用局部富集的概念,采用了包括解的先验知识在内的近似方法。在本文中,分别评估了原始XFEM和基于PUFEM的XFEM中用于裂纹分析的先验知识的复制。结果表明,在使用原始XFEM的情况下,靠近裂纹尖端的局部富集区域中严重缺乏先验知识的复制。另一方面,表明可以在基于PUFEM的XFEM的整个扩展中准确地复制先验知识。

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