A continuum-based sequential multiscale model is presented for application to
nanofilms and nanowires with anisotropic surfaces. The surface effect is accounted for
via the inclusion of surface energy due to surface stress and surface strain in the
internal energy. For anisotropic surfaces such as a <110> surface, a linear surface
elasticity model is used instead of the isotropic surface elasticity model proposed by
Gurtin and Murdoch. A molecular dynamics simulation is performed in
order to calculate initial surface stress and surface elastic tensor. Equilibrium
strain and size-dependent elasticity are estimated by the proposed continuum
model.
Aircraft Certification Team,
Aerospace Safety and Certification Center
Korea Aerospace Research Institute
169-84 Gwahangno
Yuseong-gu
Daejeon 305-806
South Korea