Abstract
An elastoplastic shear-lag analysis is developed to analyze the stress distribution around a fiber break in a composite to consider the plastic deformation in the matrix. One-dimensional shear-lag analysis which consider the fiber, the matrix and the interphase shear layer is conducted. It is assumed that the fiber consists of an elastic material and the matrix and the interphase shear layer elastoplastic materials. The method of successive elastic solutions is used to determine the plastic strain distribution in the elastoplastic materials.
