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Etude des propriétés acoustiques et mécaniques d'un matériau métallique poreux modèle à base de sphères creuses de nickel

Abstract : This thesis has focused on a model metallic cellular material, in order to provide a candidate material and design tools of an acoustic liner for turboengine exhausters. The acoustic absorption problem has lead to discuss an analytic, descriptive modelling that was available in the literature, and then to introduce a numerical technique allowing to predict the acoustical properties of a porous material. To answer the industrial need of structural strength, the elastic properties of the material have been computed, and a numerical approach of microplasticity was proposed. Finally, the implemented numerical tools were used in a simplified design and optimisation problem of an acoustic liner.
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https://tel.archives-ouvertes.fr/tel-00004438
Contributor : Stéphane Gasser <>
Submitted on : Monday, February 2, 2004 - 6:43:53 AM
Last modification on : Friday, June 26, 2020 - 2:04:02 PM
Long-term archiving on: : Wednesday, September 12, 2012 - 1:00:09 PM

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  • HAL Id : tel-00004438, version 1

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Stéphane Gasser. Etude des propriétés acoustiques et mécaniques d'un matériau métallique poreux modèle à base de sphères creuses de nickel. Modélisation et simulation. Institut National Polytechnique de Grenoble - INPG, 2003. Français. ⟨tel-00004438⟩

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