A fully nonlinear model of a damaged unidirectional metal matrix composite

Abstract eng:
A fully non-linear shear-lag model of a unidirectional metal-matrix composite, which accounts for fibre and matrix breakage, matrix plasticity, and fibre-matrix interfacial debonding and slippage has been developed in a deformation theory framework. A computationally light solution procedure based on the pseudospectral method has been developed. This approach allows the analysis of realistically sized composites. One such specimen level analysis of the Ti/SiC composite material studied by Hanan et al. [2] has been performed. The present model predictions accurately match the load recovery and stress distribution measured using neutron diffraction near a small crack.

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