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Molecular dynamics simulations of mechanical behavior in nanoscale ceramic –metallic multilayer composites
纳米金属陶瓷的力学行为lic (NbC/Nb) multilayer composites with different thickness ratios is investigated using molecular dynamics (MD) simulations. Based on the obtained stress–strain behavior and its dependence on temperature, strain rate, and loading path,the flow stress for the onset of plasticity is identified and modeled based on the nucleation theory,and the in-plane yield loci for different layer thicknesses are constructed. The results are used to establish the plastic flow potential for developing a continuum viscoplastic constitutive model for
potential use in large-scale applications
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This work is the starting point for developing continuum viscoplastic models for potential use in macro-scale anaylsis.