き裂先端要素を用いたXFEMによる二次元き裂解析

• 長嶋 利夫

  上智大学

• 澤田 昌孝

  一般財団法人 電力中央研究所 地球工学研究所

書誌事項

タイトル別名

• Two-Dimensional Crack Analyses by XFEM Using Crack Tip Elements

抄録

The extended finite element method (XFEM) using a crack tip element (TIP element), which is enriched through only the Heaviside function, is applied to crack and its propagation analysis in two-dimensional elastic problems. In the proposed method, two-kind of signed distance functions are utilized in order to express crack geometry implicitly and finite elements, which has interaction with crack, are appropriately partitioned according to the level set values and then integrated numerically for derivation of stiffness matrix. The results by XFEM using TIP elements were compared with those by the conventional XFEM using both the asymptotic bases and the Heaviside function. It was shown that the TIP element provides appropriate stress intensity factors and crack propagation path.

収録刊行物

• 日本機械学会論文集Ａ編

  日本機械学会論文集Ａ編 78 (796), 1642-1655, 2012

  一般社団法人 日本機械学会

キーワード

• XFEM
• Fracture Mechanics
• Crack Propagation
• Stress Intensity Factor
• Level Set Method

詳細情報

• CRID: 1390282679455492096
• NII論文ID: 130002573064
• DOI: 10.1299/kikaia.78.1642
• ISSN: 18848338
• ISSN: 03875008
• Web Site: https://www.jstage.jst.go.jp/article/kikaia/78/796/78_1642/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可