Author(s)

A.P.S. Selvadurai

Abstract

The bridged external circular crack A.P.S. Selvadurai Department of Civil Engineering and Applied Mechanics McGill University Montreal, Canada Abstract This paper examines the axisymmetnc problem of an external circular crack, which is located in a fibre-reinforced elastic solid. In contrast to the classical problem where the surfaces of the crack region are traction free, this paper considers the situation in which fibres exhibit continuity across the external crack thereby inducing a displacement dependent traction boundary condition. The influence of the bridging action on the crack opening mode stress intensity factor at the crack tip, created by axisymmetnc loading of a doublet of concentrated forces, is examined. 1 Introduction Unidirectional fibre-reinforced composites consist of a matrix reinforced with a random or regular network of closely spaced aligned fibres. The elastic stress analysis of these composites can be performed by idealizing the material

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