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Contributions à l'optimisation topologique de liaisons amortissantes pour des applications spatiales

Abstract : Thanks to their damping properties, elastomer materials are commonly used in the aeronautics and aerospace industries in order to reduce vibrations coming from external sources.When this material is placed between subs-systems of a mechanical assembly, it is able to protect the integrity of sensitive equipment such as electrical or optical devices.To study this phenomenon, this PhD thesis is based upon a representative finite element model of an industrial application composed of a payload that we aim to protect, a dispenser through which vibrations coming from the launcher are transmitted, and links between these sub-systems.The damping material is added inside the links which then have to handle two contradictory aims: transmitting static loads and damping vibrations.First of all, the material's positioning as well as its mechanical properties are determined by using a parametric optimization numerical strategy.Then, in order to improve the links’ design, a topology optimization algorithm is implemented.This algorithm is firstly used in a static environment, then some academic cases are solved in a dynamic environment.
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https://tel.archives-ouvertes.fr/tel-03179845
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Submitted on : Wednesday, March 24, 2021 - 3:15:08 PM
Last modification on : Wednesday, March 31, 2021 - 4:08:07 PM

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80592_BURRI_2020_archivage.pdf
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  • HAL Id : tel-03179845, version 1

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Sylvain Burri. Contributions à l'optimisation topologique de liaisons amortissantes pour des applications spatiales. Mécanique [physics.med-ph]. HESAM Université, 2020. Français. ⟨NNT : 2020HESAC039⟩. ⟨tel-03179845⟩

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