Hierarchical Coupling of Molecular Dynamics and Micromechanics to Predict the Elastic Properties of Three-Phase and Four-Phase Silicon Carbide Composites

摘要

The results obtained from previously conducted molecular dynamics analysis of silicon carbide (α-SiC(6H, 4H,& 2H-SiC),β-SiC(3CSiC)), silicon and boron nitride, were utilized as inputs in the MAC/GMC micromechanics software to model and evaluate the elastic properties of three-phase SiC/BN/SiC and four-phase SiC/BN/Si/SiC composites. This method of analysis eliminates the need for back-calculation of the apparent properties of the base constituents from the measuredceramic matrix composites properties. The multiscale models are validated against the available data in literature.