4.7 Article

A comprehensive investigation of the formulations of the interaction integral method for the evaluation of stress intensity factors of three-dimensional cracks in functionally graded materials

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Summary: This study presents a new approach for evaluating Stress Intensity Factors for cracks in three-dimensional Functionally Graded Materials using the interaction integral method with correction terms. The method allows for the use of finite element models comprising only tetrahedral elements with unstructured mesh arrangements, and has been tested for accuracy under mode I and mixed mode loadings. The results demonstrate the path-independent property of the interaction integral method and provide accurate results compared to analytical solutions.

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