每年出版 6 期
ISSN 打印: 1543-1649
ISSN 在线: 1940-4352
Indexed in
Estimation of Effective Elastic Properties of Random Structure Composites for Arbitrary Inclusion Shape and Anisotropy of Components Using Finite Element Analysis
摘要
We consider a linearly thermoelastic composite medium of arbitrary anisotropic constituents, which consists of a homogeneous matrix containing a statistically homogeneous random set of inclusions of any shape, orientation, and inhomogeneous micro structure. We use the main hypothesis of many micromechanical methods, according to which each inclusion is located inside a homogeneous so-called "effective field," accompanied by the quasi-crystalline approximation describing the inclusion interactions. We estimate effective elastic properties of composites and statistical averages of stresses, which are in general inhomogeneous in the inclusions. The proposed analyticalnumerical method is efficient from a computational standpoint and is based on the use of the finite element analysis implemented for the one-particle problem in the infinite-homogeneous matrix with forthcoming incorporation of the stress concentrator tensors found in the known analytical homogenization scheme of micromechanics described above. The method is presented for both two- and three-dimensional problems, but the numerical examples are carried out just for plane strain and plane-stress problems.
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Buryachenko V.A., Effective elastic moduli of triply periodic particulate matrix composites with imperfect unit cells, International Journal of Solids and Structures, 42, 16-17, 2005. Crossref
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Buryachenko V.A., Roy A., Effective elastic moduli of nanocomposites with prescribed random orientation of nanofibers, Composites Part B: Engineering, 36, 5, 2005. Crossref
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Hu Hurang, Onyebueke Landon, Abatan Ayo, Characterizing and Modeling Mechanical Properties of Nanocomposites-Review and Evaluation, Journal of Minerals and Materials Characterization and Engineering, 09, 04, 2010. Crossref
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Buryachenko V.A., Schoeppner G.A., Effective elastic and failure properties of fiber aligned composites, International Journal of Solids and Structures, 41, 16-17, 2004. Crossref