engleski

Multiscale atomistic-to-continuum reduced models for micromechanical systems

In this work we discuss the multiscale reduced models and computational strategy for micromechanical systems. The main focus is upon the interplay between the fine-scale atomistic model and the corresponding model at coarse-scale reduced by homogenization and placed within the continuum mechanics framework. Two mainstream multiscale methods, the quasi-continuum and bridging domain, are compared and brought to bear on the chosen model reduction strategy. Consequently, these two methods are further advanced from their standard formulation to a unified coupling and implementation strategy. An illustrative example of a defect-damaged grahene sheet is presented in order to confirm an excellent performance of such a multiscale solution strategy.

atomistic-to-continuum coupling, unified formulation

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