Abstract
Frictional sliding on interface crack surfaces results in weak crack tip stress singularity and zero strain energy release rate. A fracture criterion based on finite extension strain energy release rate, is proposed to capture the intrinsic fracture toughness. The finite extension strain energy release rate is shown to represent the magnitude of the singular stress field. Numerical simulations of a center crack in a bimaterial infinite medium under remote shear as well as fiber pull-out and push-out in composite materials are presented to illustrate the frictional effect in both small and large scale contacts near the crack tip.
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Sun, C., Qian, W. A treatment of interfacial cracks in the presence of friction. International Journal of Fracture 94, 371–382 (1998). https://doi.org/10.1023/A:1007526830000
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DOI: https://doi.org/10.1023/A:1007526830000