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A damping boundary condition for atomistic-continuum coupling

Journal Article


Abstract


  • The minimization of spurious wave reflection is a challenge in multiscale coupling due to the difference of spatial resolution between atomistic and continuum regions. In this study, a new damping condition is presented for eliminating spurious wave reflection at the interface between atomistic and continuum regions. This damping method starts by a coarsefine decomposition of the atomic velocity based on the bridging scale method. The fine scale velocity of the atoms in the damping region is reduced by applying nonlinear damping coefficients. The effectiveness of this damping method is verified by one- and two- dimensional simulations.

Publication Date


  • 2017

Citation


  • Zhang, J., Tieu, K., Michal, G., Zhu, H., Zhang, L., Su, L., Deng, G. & Wang, H. (2017). A damping boundary condition for atomistic-continuum coupling. Chinese Physics B, 26 (6), 068702-1-068702-8.

Scopus Eid


  • 2-s2.0-85020722056

Start Page


  • 068702-1

End Page


  • 068702-8

Volume


  • 26

Issue


  • 6

Place Of Publication


  • United Kingdom

Abstract


  • The minimization of spurious wave reflection is a challenge in multiscale coupling due to the difference of spatial resolution between atomistic and continuum regions. In this study, a new damping condition is presented for eliminating spurious wave reflection at the interface between atomistic and continuum regions. This damping method starts by a coarsefine decomposition of the atomic velocity based on the bridging scale method. The fine scale velocity of the atoms in the damping region is reduced by applying nonlinear damping coefficients. The effectiveness of this damping method is verified by one- and two- dimensional simulations.

Publication Date


  • 2017

Citation


  • Zhang, J., Tieu, K., Michal, G., Zhu, H., Zhang, L., Su, L., Deng, G. & Wang, H. (2017). A damping boundary condition for atomistic-continuum coupling. Chinese Physics B, 26 (6), 068702-1-068702-8.

Scopus Eid


  • 2-s2.0-85020722056

Start Page


  • 068702-1

End Page


  • 068702-8

Volume


  • 26

Issue


  • 6

Place Of Publication


  • United Kingdom