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Analysis of the driving force for a generally oriented crack in a functionally graded strip sandwiched between two homogeneous half planes
Authors:N. Shbeeb  W.K. Binienda  K. Kreider
Affiliation:(1) Civil Engineering Department, The University of Akron, Akron, OH, 44325-3905, U.S.A.
Abstract:The driving forces for a generally oriented crack problem embedded in a Functionally Graded strip sandwiched between two half plane are analyzed using singular integral equations with Cauchy kernels, and integrated using Lobatto-Chebyshev collocation. Mixed-mode Stress Intensity Factors (SIF) and Strain Energy Release Rates (SERR) are calculated. The Stress Intensity Factors are compared for accuracy with previously published results. Parametric studies are conducted for various non-homogeneity ratios, crack lengths, crack orientation and thickness of the strip. It is shown that the SERR is more complete and should be used for crack propagation analysis.
Keywords:Functionally graded materials  stress intensity factors  strain energy release rate  mixed-mode  crack.
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