Abstract
The effect of filler volume fraction on the quasi-static compression behaviour of low volume fraction glass filled epoxy composites is demonstrated by plotting the stress vs. strain curves for the filler reinforced composites. The results indicate negligible influence of spherical particles on the yield and post yield behaviour of composites due to the large inter-particle separation distance at low volume fractions. To get more insight into the influence of filler shape on the deformation mechanisms, a computational study is performed where a set of inclusions surrounded by the epoxy matrix is modeled and the materials’ deformation response to the compressive loading is analyzed by conducting a two dimensional elasto-plastic finite element simulations. From this analysis, it is revealed that the compressive stresses in the fillers are not affected with increase in the filler volume fraction; but the Mises stresses in the matrix increases with the increase in the filler volume fraction in the hardening regime of the plastic flow curve.
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