Stress Singularity at the Edge of Fiber/Matrix Interface

抄録

A general model with arbitrary bonding angles for the edge of a fiber/matrix interface is developed. Many practical problems in composite materials can be included in this model. Based on the elastic basic equations for the spatial axisymmetric problem, the stress singularity at the interface edge is investigated. The singular stress field is also deduced theoretically in detail. It is found that the eigenequation determining the stress singular order coincides with that of the corresponding plane strain problem, while the singular stress distribution does not. Moreover, three composite parameters are required to describe the effect of material combinations on the stress field in the present axisymmetric interface problem, but only two are needed in a two-dimensional plane problem.