Micromechanics of Solids

An effective approach to connecting between scales is to use molecular dynamics (MD) modeling to extract parameters from a small system consisting of one or more dislocations, and then use the parameters to construct a coarse-grained phenomenological description at the next higher scale. Guided by this philosophy, we study plastic flow in a microscale polycrystal consisting of several thousand atoms, a system suitable for studying the interaction between dislocations and grains.