Author(s)

R. Pyrz

Abstract

The dispersion of fibres in the transverse sections of unidirectionally reinforced fibre composites is investigated based upon second-order properties of spatial point pattern created by fibre centroids. The stress interaction effects mani- fested in an increased stress concentration for closer fibres depend on an arran- gement" of fibres in the matrix and this interdependence is detected by the mark correlation function. A discrete model of fracture is formulated transforming the microstructure of transversely loaded fibre reinforced material onto an irregular network of structural bonds which reflect positions of inclusions as they are placed in a real material. The model is shown to simulate realistically the spread of cracking and its localization. Furthermore, the model exhibits a scale effect that depends upon a partic

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