Abstract
In this chapter, aspects of the finite element method for obtaining the displacement field of a body containing an interface crack are described. Square-root singular, quarter-point elements in two and three dimensions will be presented. Once the displacement field is found three methods are suggested for computing stress intensity factors; they include the displacement extrapolation (DE) method, the conservative interaction energy integral or M-integral, and the Virtual Crack Closure Technique (VCCT). The stress intensity factors are then employed to obtain the interface energy release rate and two phase angles.
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Banks-Sills, L. (2018). Calculation of Stress Intensity Factors – An Interface Crack. In: Interface Fracture and Delaminations in Composite Materials. SpringerBriefs in Applied Sciences and Technology(). Springer, Cham. https://doi.org/10.1007/978-3-319-60327-8_3
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DOI: https://doi.org/10.1007/978-3-319-60327-8_3
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