Simulation of the Mechanical Behaviour of Metal Matrix Composites
A model based on the geometry of the phases is introduced in order to investigate the mechanical properties of interpenetrating microstructures. In order to characterize the elastic and elastic-plastic properties of the composite a self consistent unit cell model is applied on a wide range of volume fractions for an Al/TiO2 composite. Besides the volume fraction a microstructural based parameter is used, the matricity, to describe the mutual circumvention of both phases. Computations are carried out for different temperatures and void volume fractions. In addition a conservative fracture criterion based on critical normal stresses is applied to derive realistic stress strain curves.
Lorella Ceschini and Roberto Montanari
S. Schmauder et al., "Simulation of the Mechanical Behaviour of Metal Matrix Composites", Materials Science Forum, Vol. 678, pp. 49-60, 2011