On the stress singularities at multimaterial interfaces and related analogies with fluid dynamics and diffusion

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Characteristics of the process zone at sharp notch roots (2011, background): “…have also been numerous extensions to the basic eigensolution itself, including determining the characteristics of bonded elastically dissimilar wedges (Bogy, 1971a; Bogy and Wang, 1971b) and elastic anisotropy (Ma and Hour, 1989, 1990; Labossiere and Dunn, 1998, 1999; Paggi and Carpinteri, 2008).”
Revisiting the problem of a crack impinging on an interface: A modeling framework for the interaction between the phase field approach for brittle fracture and the interface cohesive zone model (2017, background): “Finally, microstructures presenting internal multi-material junction problems [13], internal stress concentrations or even intensifications are possible according to linear elastic fracture mechanics.”