An adaptive finite element procedure for crack propagation analysis

Abdulnaser M. Alshoaibi, M. S A Hadi, Ahmad Kamal Ariffin Mohd Ihsan

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

This paper presents the adaptive mesh finite element estimation method for analyzing 2D linear elastic fracture problems. The mesh is generated by the advancing front method and the norm stress error is taken as a posteriori error estimator for the h-type adaptive refinement. The stress intensity factors are estimated by a displacement extrapolation technique. The near crack tip displacements used are obtained from specific nodes of natural six-noded quarter-point elements which are generated around the crack tip defined by the user. The crack growth and its direction are determined by the calculated stress intensity factors. The maximum circumference theory is used for the latter. In evaluating the accuracy of the estimated stress intensity factors, four cases are tested consisting of compact tension specimen, three-point bending specimen, central cracked plate and double edge notched plate. These were carried out and compared to the results from other studies. The crack trajectories of these specimen tests are also illustrated.

Original languageEnglish
Pages (from-to)228-236
Number of pages9
JournalJournal of Zhejiang University: Science A
Volume8
Issue number2
DOIs
Publication statusPublished - Feb 2007

Fingerprint

Stress intensity factors
Crack propagation
Crack tips
Extrapolation
Trajectories
Cracks

Keywords

  • Adaptive refinement
  • Crack propagation
  • Linear elastic fracture mechanics
  • Stress intensity factors

ASJC Scopus subject areas

  • Engineering(all)

Cite this

An adaptive finite element procedure for crack propagation analysis. / Alshoaibi, Abdulnaser M.; Hadi, M. S A; Mohd Ihsan, Ahmad Kamal Ariffin.

In: Journal of Zhejiang University: Science A, Vol. 8, No. 2, 02.2007, p. 228-236.

Research output: Contribution to journalArticle

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