Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7169843 | Engineering Fracture Mechanics | 2014 | 24 Pages |
Abstract
A technique was implemented for decomposing 3-D mixed-mode energy release rates using the Virtual Crack Extension (VCE) method. The technique uses a symmetric/anti-symmetric approach to decompose local crack-front displacements that are substituted into the global VCE energy release rate form. The subsequent expansion leads to the mixed-mode energy release rate expressions. As a result of the expansion, previously unaddressed modal-interaction coupling terms are found to impact the mixed-mode energy release rates. This development expands the VCE method's advantages over similar procedures when simulating arbitrary crack growth by providing the means to calculate both mixed-mode energy release rates and their variations.
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Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
B.R. Davis, P.A. Wawrzynek, C.G. Hwang, A.R. Ingraffea,