An analytical approach to modeling stress–strain relationship of particle–reinforced metal matrix composites

Abstract

An analytical model was established to simulate the stress–strain curves of particle–reinforced metal matrix composites by the classical stress equilibrium equation and secant modulus method, where particle cracking and matrix tearing were taken into consideration. The stress–strain curves of the composites predicted by the model fit the experimental curves very well. The stress–strain relationship of the matrix affected by the particles is predicted exactly, and it is found that the yield stress of the matrix is influenced obviously by the particle content. The yield strength of the composites is also predicted by the model, and the results fit the experimental data very well.