An asymptotic formula for displacement field in triangular lattice with vacancy
Materials Science
2017-06-08 v1 Mesoscale and Nanoscale Physics
Classical Physics
Abstract
A harmonic triangular lattice with a vacancy under imposed volumetric strain is considered. Simple asymptotic formula for the displacement field is derived. The formula has reasonable accuracy at all lattice nodes. Strain concentration factor, defined as the ratio of the maximal deformation of the bonds adjacent to the vacancy to the deformations of bonds at infinity, is calculated. It is shown that the asymptotic formula predicts the strain concentration factor with 4% accuracy. The results are compared with predictions of continuum elasticity theory. Effective diameter of the vacancy is calculated.
Keywords
Cite
@article{arxiv.1706.02056,
title = {An asymptotic formula for displacement field in triangular lattice with vacancy},
author = {V. A. Tsaplin and V. A. Kuzkin},
journal= {arXiv preprint arXiv:1706.02056},
year = {2017}
}
Comments
7 pages; 2 figures