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Prise en compte des hétérogénéités structurales en modélisation et calcul des vibrations moyennes fréquences par la théorie variationnelle des rayons complexes

Abstract : This work uses a multiscale method specifically intended to deal with mediumfrequency problems: the "Variational Theory of Complex Rays", which is initially based on the assumption that the structure is an assembly of homogeneous substructures. Its efficiency has already been demonstrated for three dimensional assemblies of plates and shells. However, most industrial structures present structural discontinuities such as portholes which greatly affect the vibrational response in medium frequencies. The aim here is to take them into account. We propose a strategy based on the enrichment of the basis functions used by the method with a view to verify a priori conditions on the boundary of the discontinuity.
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https://tel.archives-ouvertes.fr/tel-00132111
Contributor : Ens Cachan Bibliothèque <>
Submitted on : Tuesday, February 20, 2007 - 12:24:48 PM
Last modification on : Monday, February 15, 2021 - 10:49:23 AM
Long-term archiving on: : Tuesday, April 6, 2010 - 9:19:41 PM

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  • HAL Id : tel-00132111, version 1

Citation

Laurent Blanc. Prise en compte des hétérogénéités structurales en modélisation et calcul des vibrations moyennes fréquences par la théorie variationnelle des rayons complexes. Mécanique [physics.med-ph]. École normale supérieure de Cachan - ENS Cachan, 2005. Français. ⟨tel-00132111⟩

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