Engineering Transactions, 53, 4, pp. 363–374, 2005

Influence of Anisotropy Induced by Microcracks on Effectiye Elastic Properties

B. Gambin
Institute of Fundamental Technological Research
Poland

A. Gałka
Institute of Fundamental Technological Research
Poland

J. J. Telega
Institute of Fundamental Technological Research
Poland

S. Tokarzewski
Institute of Fundamental Technological Research
Poland

The influence of microcracks distribution on macroscopic elastic properties of composites with a specific structure is studied. The model predicts the properties of laminates made of materials in which fracture process leads to appearance of many microcracks distributed practically uniformly. The method of solution is based on the so-called reiterated homogenization with two different scales of inhomogeneities. The smaller scale is connected with microcracks size. After homogenization performed with the help of FEM an anisotropic homogeneous elastic material is obtained. The anisotropy is implied by directional distribution of microcracks. On the second larger scale, random mixture of two or more different anisotropic elastic materials is considered.
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