A mesh generation technique for three dimensional crack propagation analysis using virtual crack closure-integral method (VCCM) and tetrahedral finite element

Hiroshi Kawai, Hiroshi Okada, Kosuke Araki

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Three dimensional crack propagation analysis will enable more realistic assessment of the structural integrity for aging structures such as aircrafts and power plants. Recently, as a linear-elastic fracture parameter evaluation method, VCCM (Virtual Crack Closure-Integral Method) is extended for 3-D tetrahedral element. With fully automatic generation capability of tetrahedral mesh, more realistic crack propagation of a 3-D arbitrary curved geometry can be handled efficiently. Here, we developed a new mesh generation technique for 3-D crack propagation analysis. A crack propagation analysis of an elliptical crack in a mixed mode environment, which is initially flat and is gradually growing into a curved crack in 3-D space, is also demonstrated.

Original languageEnglish
Pages (from-to)819-826
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume74
Issue number6
Publication statusPublished - 1 Jun 2008

Keywords

  • Crack propagation
  • Delaunay triangulation
  • Fracture mechanics
  • Mesh generation
  • Virtual crack closure-integral method

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