Evaluation of blending elements in xfem on crack analysis and proposal for improvement of analytical accuracy

Kazuki Shibanuma, Tomoaki Utsunomiya

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In the XFEM, elements with some of their nodes enriched are usually called 'blending elements (BE)'. Decrement in accuracy of the analytic solution in BE is associated to a lack of partition-of-unity. In this paper, the influence of BE on the analytical accuracy of fracture mechanics parameters based on J-integral method is first evaluated. Then, a newly proposed modeling methodology on the domain of enrichment, considering the J-integral path, is presented. This methodology is straightforward allowing avoidance of the direct influence of BE on the analytical accuracy. Therefore, analyses with sufficient accuracy in the minimum enrichment domain are effectively achieved by using the proposed methodology.

Original languageEnglish
Pages (from-to)970-981
Number of pages12
JournalDoboku Gakkai Ronbunshuu A
Volume64
Issue number4
DOIs
Publication statusPublished - Dec 1 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Mechanical Engineering

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