Generalized expressions for the calculation of elastic constants by computer simulation
- 15 April 1989
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 65 (8) , 2991-2997
- https://doi.org/10.1063/1.342716
Abstract
The general expressions, valid for any potential, for the calculation of elastic constants through computer simulation are given. At zero temperature, the elastic constants are found to be the sum of a generalization of the Born term and a term accounting for internal relaxations that arise when a system with more than one atom in the primitive unit cell is strained. The fluctuation formulae used in finite temperature simulations are found to be straightforward generalizations of those used for pair potentials. The connection between the finite‐temperature and zero‐temperature methods is also made.This publication has 7 references indexed in Scilit:
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