Axisymmetric cracking of a composite cylinder containing interface and matrix cracks
- City Univ. of New York, New York, NY (United States)
In this paper, the interface and matrix fracture problems of uniaxially fiber-reinforced composites are analyzed. The composite is modeled as two concentric cylinders with interface and matrix cracks. Both fiber and matrix are isotropic, homogeneous, and linearly elastic. Using the crack surface displacement derivatives as unknowns the problem is formulated in terms of singular integral equations. The formulation leads to a system of coupled singular integral equations, which contains singular integral equations of the second kind with logarithmically singular and discontinuous Fredholm kernels for the interface crack and singular integral equations with generalized Cauchy kernels when the matrix crack touches the interface. The system is solved numerically, with the aid of the weighted residual and collocation techniques. The results are given in terms of stress intensity factors and strain energy release rates, which are of interest in studying the damage mechanisms of composites.
- OSTI ID:
- 237741
- Report Number(s):
- CONF-9510177--; ISBN 1-56676-376-2
- Country of Publication:
- United States
- Language:
- English
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