期刊
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
卷 47, 期 17, 页码 2191-2200出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijsolstr.2010.04.004
关键词
Composite materials; Interfacial debonding; Micromechanics; Finite element analysis
类别
This paper considers the problem of determining the nonlinear bimodular stiffness properties, i.e., the tensile and compressive Young's moduli and Poisson's ratios, and the shear modulus, of particulate composite materials with particle-matrix interfacial debonding. It treats the general case in which some of the particles are debonded while the others remain intact. The Mori-Tanaka approach is extended to formulate the method of solution for the present problem. The resulting auxiliary problem of a single debonded particle in an infinite matrix subjected to a remote stress equal to the average matrix stress, for which Eshelby's solution does not exist, is solved by the finite element method accounting for the particle-matrix separation and contact at the debonded particle-matrix interface. Because of the nonlinear nature of the problem, an iterative process is employed in calculating the stiffness properties. The predicted stiffness properties are compared to the exact solutions of the stiffness properties of particulate composites with body-centered cubic packing arrangement. (C) 2010 Elsevier Ltd. All rights reserved.
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