Numerical analysis of edge effects in laminated composites under uniaxial compression

Abstract

Edge effects in a laminated composite with two isotropic components under uniaxial compression are studied. Grid equations are derived using a modified variational difference method. Numerical results are analyzed Keywords: edge effects, composite materials, uniaxial compression, variational difference method, grid equationsIntroduction. Edge effects in and the three-dimensional stability of laminated composites under uniaxial loading were numerically analyzed in [2,9]. Also of interest is the application of numerical methods to the study of edge effects in structures made of laminated composite materials with two isotropic components under uniform loading. Note that the numerical analysis of edge effects in structural members made of composites involves mathematical and mechanical models and criteria for the evaluation of edge-effect zones [2,9]. The problems addressed here are inadequately elucidated in the literature [5][6][7] because it is difficult to solve them. The present paper gives a problem statement, governing equations, and a method for the numerical analysis of edge effects in two-component laminated composite under uniaxial compression.1. Formulation of a Model Problem. Consider a structure (plate) made of a matrix composite with two isotropic components under a uniform load s 22