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

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

Research output: Contribution to journalArticle

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, non-equilibrium 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)1253-77
Number of pages25
JournalThe Aeronautical Journal
Volume116
Issue number1186
Publication statusPublished - Dec 2012

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