MODELLING OF FRACTURE IN FIBRE-CEMENT BASED MATERIALS

摘要

In this paper a model is presented to simulate fracture of fibre reinforced cement based materials. The model is based on a lattice-type fracture model. Fibres are explicitly implemented as separate elements connected to the cement matrix via special interface elements. With the model multiple cracking and ductile global behaviour are simulated of the composite material. Variables in the model are the fibre dimensions and properties, the fibre volume in the composite, the bond behaviour of fibres and matrix and the cement matrix properties. These properties are obtained by testing, which will be described in the paper. The model is used as a design tool for creating fibre cement based composites with any desired mechanical behaviour.