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Properties of frictional bridging in fiber pull-out for fiber-reinforced composites. (English) Zbl 1082.74048

Summary: Stress equilibrium equations, and boundary and continuity conditions were used to establish a theoretical model of progressive debonding with friction at the debonded interface. On the basis of minimum complementary energy principle, an expression for the energy release rate \(G\) was derived to explore the interfacial fracture properties. An interfacial debonding criterion \(G\geq \Gamma_i\) was introduced to determine the critical debond length and the bridging law. Numerical calculation results for fiber-reinforced composite SCS-6/Ti-6Al-4V were compared with those obtained by using the shear-lag models.

MSC:

74R99 Fracture and damage
74E30 Composite and mixture properties
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