Analytical study on the elastoplastic behavior in metal matrix composites

Computational homogenization provides an excellent tool for the design of composite materials. In the current work, a computational approach is presented that is capable of estimating the elastic and rate-independent plastic constitutive behavior of metal matrix composites using finite element models of representative volume elements (RVEs) of the composite material. For this purpose, methodologies for the generation of three-dimensional computational microstructures, size determination of RVEs and the homogenization techniques are presented. Validation of the approach is carried out using aluminum–alumina composite samples prepared using sintering technique. Using the homogenized material response, effective constitutive models of the composite materials have been determined.

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Incremental Elastoplastic Behavior of Metal Matrix Composites Based on Averaging Schemes

Inelastic Deformation of Composite Materials ◽

10.1007/978-1-4613-9109-8_22 ◽

1991 ◽

pp. 465-485 ◽

Cited By ~ 1

Author(s):

Dimitris C. Lagoudas ◽

Andres C. Gavazzi

Keyword(s):

Metal Matrix Composites ◽

Metal Matrix ◽

Matrix Composites ◽

Elastoplastic Behavior

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Analytical study for the stress analysis of Metal Matrix Composites

Journal of Materials Processing Technology ◽

10.1016/0924-0136(94)90377-8 ◽

1994 ◽

Vol 45 (1-4) ◽

pp. 429-434 ◽

Cited By ~ 8

Author(s):

D. Huda ◽

M.A. El Baradie ◽

M.S.J. Hashmi

Keyword(s):

Stress Analysis ◽

Metal Matrix Composites ◽

Metal Matrix ◽

Analytical Study ◽

Matrix Composites

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Micromechanical Evolutionary Elastoplastic Damage Model for Fiber-Reinforced Metal Matrix Composites With Fiber Debonding

Applied Mechanics ◽

10.1115/imece2004-59487 ◽

2004 ◽

Cited By ~ 2

Author(s):

J. W. Ju ◽

H. N. Ruan ◽

Y. F. Ko

Keyword(s):

Metal Matrix Composites ◽

Metal Matrix ◽

Yield Criterion ◽

Damage Model ◽

Order Effects ◽

Matrix Composites ◽

Fiber Reinforced ◽

Interfacial Damage ◽

Elastoplastic Behavior ◽

Three Phase

A micromechanical evolutionary damage model is proposed to predict the overall elastoplastic behavior and interfacial damage evolution of fiber-reinforced metal matrix composites. Progressive debonded fibers are replaced by equivalent voids. The effective elastic moduli of three-phase composites, composed of a ductile matrix, randomly located yet unidirectionally aligned circular fibers, and voids, are derived by using a rigorous micromechanical formulation. In order to characterize the overall elastoplastic behavior, an effective yield criterion is derived based on the ensemble-area averaging process and the first-order effects of eigenstrains.

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