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

Published online by Cambridge University Press:  27 January 2016

N. Muthu ,
S. K. Maiti ,
B. G. Falzon  and
I. Guiamatsia
N. Muthu
Affiliation:
IITB-Monash Research Academy, IIT Bombay Powai, India
S. K. Maiti
Affiliation:
Department of Mechanical Engineering, IIT Bombay Powai, India
B. G. Falzon*
Affiliation:
Department of Mechanical and Aerospace Engineering, Monash University, Clayton, Australia
I. Guiamatsia
Affiliation:
School of Civil Engineering, The University of Sydney, Sydney, Australia
*
[email protected]
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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.

Type
Research Article
Information
The Aeronautical Journal , Volume 116 , Issue 1186 , December 2012 , pp. 1263 - 1287
Copyright
Copyright © Royal Aeronautical Society 2012 

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