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A fiber-bridged crack with rate-dependent bridging forces. (English) Zbl 0996.74065
Summary: To characterize the inelastic behavior of bridged crackets in composites, we use the rate-dependent model to study the bridging forces acting across a fiber-bridged slit crack in a homogeneous anisotropic elastic material. The basic equilibrium equations are presented and solved using a series of Chebyshev polynomials and a suitable numerical scheme. An example of a bridged crack in an isotropic homogeneous material is examined in detail. The results show that, under a constant extemal load, the stress intensity factors and the energy release rate increase with time until a critical time is reached, after which all these quantities approach the corresponding values for an unbridged crack.

MSC:
74R10 Brittle fracture
74E10 Anisotropy in solid mechanics
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