Rayleigh-type Surface Quasimodes in General Linear Elasticity
Analysis of PDEs
2012-02-13 v2 Spectral Theory
Abstract
Rayleigh-type surface waves correspond to the characteristic variety, in the elliptic boundary region, of the displacement-to-traction map. In this paper, surface quasimodes are constructed for the reduced elastic wave equation, anisotropic in general, with traction-free boundary. Assuming a global variant of a condition of Barnett and Lothe, the construction is reduced to an eigenvalue problem for a selfadjoint scalar first order pseudo-differential operator on the boundary. The principal and the subprincipal symbol of this operator are computed. The formula for the subprincipal symbol seems to be new even in the isotropic case.
Cite
@article{arxiv.1008.2930,
title = {Rayleigh-type Surface Quasimodes in General Linear Elasticity},
author = {Sönke Hansen},
journal= {arXiv preprint arXiv:1008.2930},
year = {2012}
}
Comments
46 pages. Corrected a Lipschitz estimate and the proof of Proposition 21