Dominance of shear elastic energy far from a point defect in a solid

Abstract

It is shown that the elastic energy far from a point defect in an isotropic solid is mainly shear elastic energy. The calculation, which is based on a standard dipole expansion, shows that less than 10% of the distant point defect energy is associated with volume changes, no matter how large or small the bulk modulus is compared to the shear modulus. © 2007 The American Physical Society.