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Theses

Analyse du comportement dynamique d'un élastomère : modélisation et identification

Abstract : Elastomer joints are used for the vibratory insulation of cars. The objective of this thesis is to perform measurements, modeling, and identification of elastomer dynamic behaviour in the frequency band of 0-100 Hz. The viscoelastic cylinder joint is tested under uniaxial exciation by hydraulic actuator at different levels of preload and amplitude of displacement in order to obtain its complex Young modulus. We studied mathematical models with limited number of parameters according to our experimental data. Two linear viscoelastic models with four parameters are retained: the first one was proposed by Biot, it concerns the modeling of solid friction and the other, closely related to the previous one, used the fractionnal derivatives. Moreover, we established for the parameters, interpolation relations which take into account the preload's effect and the displacement's amplitude and hightlight the nonlinear aspects of the elastomer's behavior. The predicability of the models in the time domain was verified using quasi-static and static tests. Finally, a critical study is performed to check the quality of the models for dissipative material.
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https://pastel.archives-ouvertes.fr/pastel-00001265
Contributor : Ecole Des Ponts Paristech <>
Submitted on : Thursday, September 9, 2010 - 1:58:54 PM
Last modification on : Monday, April 9, 2018 - 10:48:46 AM
Long-term archiving on: : Friday, September 10, 2010 - 4:12:52 PM

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  • HAL Id : pastel-00001265, version 1

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Alex Huynh Kim Long. Analyse du comportement dynamique d'un élastomère : modélisation et identification. Sciences de l'ingénieur [physics]. Ecole des Ponts ParisTech, 2005. Français. ⟨NNT : 2005ENPC0004⟩. ⟨pastel-00001265⟩

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