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Modeling of fracture of fibrous composites with brittle components

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Mechanics of Composite Materials Aims and scope

Conclusions

A numerical analysis of the stress field at the tip of a crack showed high localization, increasing with increase of anisotropy and normal and shear stresses at the crack tip, which can cause various types of fracture. The use of the J-integral for estimates of the flow of elastic energy to the crack tip, simulated by a greatly elongated elliptical notch, is apparently possible in approximate calculations, taking into account localization of the zone of nonlinear behavior of the material. A scheme of estimating the crack resistance of a fibrous material with brittle components, taking into account the contribution of various forms of microfracture to energy dissipation, is proposed. The calculated value of G* differs from the experimental data by about 20%, which, taking into account the simplicity of the calculation method, can be considered satisfactory.

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Authors and Affiliations

  1. Institute of Solid-State Physics, Academy of Sciences of the USSR, Moscow

    V. M. Kiiko

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  1. V. M. Kiiko
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Additional information

Translated from Mekhanika Kompozitnykh Materialov, No. 4, pp. 615–619, July–August, 1981.

The author thanks S. T. Mileiko for formulating the problem, advice, and discussion of the work.

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Kiiko, V.M. Modeling of fracture of fibrous composites with brittle components. Mech Compos Mater 17, 415–419 (1982). https://doi.org/10.1007/BF00605907

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  • DOI: https://doi.org/10.1007/BF00605907

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