Effects of Plasticity Models on Residual Stresses and Plastic Zone Growth in Aluminum Metal-matrix Composites Under Out-of-plane Loading

Abstract

In this study, steel-fiber-reinforced aluminum metal-matrix laminated composite plates, which are clamped and subjected to out-of-plane loading are investigated, to obtain residual stresses and the growth of plastic zone by using different plasticity models such as Ludwick, Holloman, and Barlat. Laminated plates are composed of four orthotropic layers oriented with different angles in symmetric or antisymmetric manner. The plates are meshed into 64 elements and 289 nodes with clamped boundary condition. Laminates are subjected to a transverse uniform distributed load. The loading is gradually increased after yield point of the plate to the higher levels with 400, 500, and 600 loading steps. Numerical solution is performed by using the finite element method and the first-order shear deformation theory. For solution, Lagrange elements with nine nodes are used.

Keywords

metal-matrix composites (MMCs)plastic deformation finite element analysis (FEA)residual/internal stress

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