Computation of stress intensity factors in functionally graded materials using partition-of-unity meshfree method

N. Muthu*, S. K. Maiti, B. G. Falzon, I. Guiamatsia

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

This paper describes the computation of stress intensity factors (SIFs) for cracks in functionally graded materials (FGMs) using an extended element-free Galerkin (XEFG) method. The SIFs are extracted through the crack closure integral (CCI) with a local smoothing technique, nonequilibrium and incompatibility formulations of the interaction integral and the displacement method. The results for mode I and mixed mode case studies are presented and compared with those available in the literature. They are found to be in good agreement where the average absolute error for the CCI with local smoothing, despite its simplicity, yielded a high level of accuracy.

Original languageEnglish
Pages (from-to)1263-1287
Number of pages25
JournalAeronautical Journal
Volume116
Issue number1186
DOIs
Publication statusPublished - Dec 2012
Externally publishedYes

ASJC Scopus subject areas

  • Aerospace Engineering

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