Proc. 15th European Conference on Composite Materials pages:1-8
ECCM, European Conference on Composite Materials edition:15 location:Venice, Italy date:24-28 July 2012
All existing models for the stress redistribution after a single fibre breakage in a unidirectional fibre-reinforced composites use regular fibre packings. In the present work, the stress redistribution in random fibre packings was analyzed using three dimensional finite element analysis. Compared to regular fibre packings, random fibre packings result in a lower ineffective length and, when looking at fibres at the same distance from the broken fibre, in lower stress concentration factors and overload lengths. It was shown that an increase in fibre volume fraction has a similar effect as changing from regular to random fibre packings.