Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
520337 | Journal of Computational Physics | 2010 | 18 Pages |
Abstract
We present a multiscale model for numerical simulations of dynamics of crystalline solids. The method combines the continuum nonlinear elasto-dynamics model, which models the stress waves and physical loading conditions, and molecular dynamics model, which provides the nonlinear constitutive relation and resolves the atomic structures near local defects. The coupling of the two models is achieved based on a general framework for multiscale modeling – the heterogeneous multiscale method (HMM). We derive an explicit coupling condition at the atomistic/continuum interface. Application to the dynamics of brittle cracks under various loading conditions is presented as test examples.
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Authors
Xiantao Li, Jerry Z. Yang, Weinan E,