Research output: Contribution to journal › Article › peer-review
Homogenization of Winkler–Steklov spectral conditions in three-dimensional linear elasticity. / Gomez, D.; Nazarov, S.A.; Perez, E.
In: Zeitschrift fur Angewandte Mathematik und Physik, Vol. 69, No. 2, 35, 01.04.2018.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Homogenization of Winkler–Steklov spectral conditions in three-dimensional linear elasticity
AU - Gomez, D.
AU - Nazarov, S.A.
AU - Perez, E.
PY - 2018/4/1
Y1 - 2018/4/1
N2 - We consider a homogenization Winkler–Steklov spectral problem that consists of the elasticity equations for a three-dimensional homogeneous anisotropic elastic body which has a plane part of the surface subject to alternating boundary conditions on small regions periodically placed along the plane. These conditions are of the Dirichlet type and of the Winkler–Steklov type, the latter containing the spectral parameter. The rest of the boundary of the body is fixed, and the period and size of the regions, where the spectral parameter arises, are of order ε. For fixed ε, the problem has a discrete spectrum, and we address the asymptotic behavior of the eigenvalues {βkε}k=1∞ as ε→ 0. We show that βkε=O(ε-1) for each fixed k, and we observe a common limit point for all the rescaled eigenvalues εβkε while we make it evident that, although the periodicity of the structure only affects the boundary conditions, a band-gap structure of the spectrum is inherited asymptotically. Also, we provide the asymptotic behavior for certain “groups” of eigenmodes.
AB - We consider a homogenization Winkler–Steklov spectral problem that consists of the elasticity equations for a three-dimensional homogeneous anisotropic elastic body which has a plane part of the surface subject to alternating boundary conditions on small regions periodically placed along the plane. These conditions are of the Dirichlet type and of the Winkler–Steklov type, the latter containing the spectral parameter. The rest of the boundary of the body is fixed, and the period and size of the regions, where the spectral parameter arises, are of order ε. For fixed ε, the problem has a discrete spectrum, and we address the asymptotic behavior of the eigenvalues {βkε}k=1∞ as ε→ 0. We show that βkε=O(ε-1) for each fixed k, and we observe a common limit point for all the rescaled eigenvalues εβkε while we make it evident that, although the periodicity of the structure only affects the boundary conditions, a band-gap structure of the spectrum is inherited asymptotically. Also, we provide the asymptotic behavior for certain “groups” of eigenmodes.
KW - Floquet–Bloch–Gelfand transform
KW - Homogenization
KW - Linear elasticity
KW - Spectral perturbation theory
KW - Steklov problem
KW - Winkler foundation
UR - http://www.scopus.com/inward/record.url?scp=85042744738&partnerID=8YFLogxK
U2 - 10.1007/s00033-018-0927-8
DO - 10.1007/s00033-018-0927-8
M3 - Article
VL - 69
JO - Zeitschrift fur Angewandte Mathematik und Physik
JF - Zeitschrift fur Angewandte Mathematik und Physik
SN - 0044-2275
IS - 2
M1 - 35
ER -
ID: 35201918