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To better simulate multi-phase interactions involving failure evolution,the material point method (MPM) has evolved for almost twenty years.Recently,a particle-based multiscale simulation procedure is being developed,within the framework of the MPM,to describe the detonation process of energetic nano-composites from molecular to continuum level so that a multiscale equation of state could be formulated.In this letter,a multiscale MPM is proposed via both hierarchical and concurrent schemes to simulate the impact response between two microrods with different nanostructures.Preliminary results are presented to illustrate that a transition region is not required between different spatial scales with the proposed approach.
To better simulate multi-phase interactions involving failure evolution, the material point method (MPM) has evolved for almost twenty years. Recently, a particle-based multiscale simulation procedure is being developed, within the framework of the MPM, to describe the detonation process of energetic nano-composites from molecular to continuum level so that a multiscale equation of state could be formulated. In this letter, a multiscale MPM is proposed via both hierarchical and concurrent schemes to simulate the impact response between two microrods with different nanostructures. are presented to illustrate that a transition region is not required between different spatial scales with the proposed approach.