Bands in the spectrum of a periodic elastic waveguide
arXiv:1602.04793 · doi:10.1007/s00033-017-0846-0
Abstract
We study the spectral linear elasticity problem in an unbounded periodic waveguide, which consists of a sequence of identical bounded cells connected by thin ligaments of diameter of order . The essential spectrum of the problem is known to have band-gap structure. We derive asymptotic formulas for the position of the spectral bands and gaps, as .
28 pages, 5 figures