A multiscale coupling method for the modeling of dynamics of solids with application to brittle cracks

作者：Li Xiantao^*; Yang Jerry Z; E Weinan

来源：Journal of Computational Physics, 2010, 229(10): 3970-3987.

DOI：10.1016/j.jcp.2010.01.039

• Molecular dynamics
• Multiscale methods
• Crystalline solids

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 couplin

• 出版日期2010-5-20