Comptes Rendus
Asymptotically sharp uniform estimates in a scalar spectral stiff problem
[Estimations asymptotiques uniformes pour le spectre d'un problème scalaire raide]
Comptes Rendus. Mécanique, Volume 331 (2003) no. 5, pp. 325-330.

On obtienent des estimations de la vitesse de convergence des valeurs propres, convenablement mises a l'échelle, d'un problème de Neumann raide pour l'operateur de Laplace. Des bornes correspondantes a ces estimations sont exprimées en termes du rapport des raideurs et des propriétés du spectre limite dans les rangs des fréquences basses et moyennes.

Estimates of convergence rates for rescaled eigenvalues of the stiff Neumann problem for the Laplacian are obtained. The bounds are expressed in terms of the stiffness ratio and properties of the limit spectrum both for low and middle frequency ranges.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/S1631-0721(03)00073-1
Keywords: Acoustics, Waves, Vibrations, Stiff problem, Spectral analysis, Low frequencies, Middle frequencies
Mots-clés : Acoustique, Ondes, Vibrations, Problème raide, Analyse spectrale, Basses fréquences, Moyennes fréquences

Miguel Lobo 1 ; Serguei A. Nazarov 2 ; Eugenia Pérez 3

1 Departamento de Matemáticas, Estadı́stica y Computación, Universidad de Cantabria, Av. de los Castros, s/n. 39005 Santander, Spain
2 Institute of Mechanical Engineering Problems, RAN V. O. Bol'shoi pr., 61, 199178 St Petersburg, Russia
3 Departamento de Matemática Aplicada y Ciencias de la Computación, Universidad de Cantabria, Av. de los Castros, s/n. 39005 Santander, Spain
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Miguel Lobo; Serguei A. Nazarov; Eugenia Pérez. Asymptotically sharp uniform estimates in a scalar spectral stiff problem. Comptes Rendus. Mécanique, Volume 331 (2003) no. 5, pp. 325-330. doi : 10.1016/S1631-0721(03)00073-1. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/S1631-0721(03)00073-1/

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  • V. Chiadò Piat; L. D’Elia; S.A. Nazarov The stiff Neumann problem: Asymptotic specialty and “kissing” domains, Asymptotic Analysis, Volume 128 (2022) no. 1, p. 113 | DOI:10.3233/asy-211701
  • Delfina Gómez; Sergey A. Nazarov; Maria–Eugenia Pérez-Martínez A Dirichlet Spectral Problem in Domains Surrounded by Thin Stiff and Heavy Bands, Computational and Analytic Methods in Science and Engineering (2020), p. 101 | DOI:10.1007/978-3-030-48186-5_6
  • Delfina Gómez; Santiago Navazo-Esteban; María-Eugenia Pérez-Martínez A Stiff Problem: Stationary Waves and Approximations, Integral Methods in Science and Engineering (2019), p. 133 | DOI:10.1007/978-3-030-16077-7_11
  • C. Cardone; V. Minutolo; S.A. Nazarov Gaps in the essential spectrum of periodic elastic waveguides, ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 89 (2009) no. 9, p. 729 | DOI:10.1002/zamm.200800221
  • S. A. Nazarov Trapped modes in a cylindrical elastic waveguide with a damping gasket, Computational Mathematics and Mathematical Physics, Volume 48 (2008) no. 5, p. 816 | DOI:10.1134/s0965542508050102
  • Eugenia Pérez Long time approximations for solutions of wave equations via standing waves from quasimodes, Journal de Mathématiques Pures et Appliquées, Volume 90 (2008) no. 4, p. 387 | DOI:10.1016/j.matpur.2008.06.003
  • D. Gómez; M. Lobo; S.A. Nazarov; E. Pérez Spectral stiff problems in domains surrounded by thin bands: Asymptotic and uniform estimates for eigenvalues, Journal de Mathématiques Pures et Appliquées, Volume 85 (2006) no. 4, p. 598 | DOI:10.1016/j.matpur.2005.10.013

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