Title: Experimental and numerical investigation of flexural vibration damping by recycled rubber granulates

Authors: A. Chettah, S. Chedly, M. Ichchou, O. Bareille, J.P. Onteniente

Addresses: Laboratoire de Tribologie et Dynamique des Systemes, Ecole Centrale de Lyon, 69134 Lyon, France. ' Laboratoire d'Etudes des Matieres Plastiques d'Emballage, IFTS, 08000 Charleville-Mezieres, France. ' Laboratoire de Tribologie et Dynamique des Systemes, Ecole Centrale de Lyon, 69134 Lyon, France. ' Laboratoire de Tribologie et Dynamique des Systemes, Ecole Centrale de Lyon, 69134 Lyon, France. ' Laboratoire d'Etudes des Matieres Plastiques d'Emballage, IFTS, 08000 Charleville-Mezieres, France

Abstract: An investigation has been carried out in which recycled rubber granulates are added to damp rectangular tubes. A series of experiments have been carried out on the tube filled at different rates of filling. A model for calculating the displacement-force frequency responses has been derived by means of the Dynamic Stiffness Method (DSM) taken into account the assumption of internal resonance in quarter wavelength in granular material. Agreement between measured and calculated results is acceptable to permit estimation of complex wave-speed of granular material. Finally, we compare the quantified wave-speeds and their loss factors with experiments.

Keywords: recycled tyre rubber; granular media; particle damping; dynamic stiffness method; DSM; flexural vibration; vibration damping; displacement force; tyre recycling; worn tyres.

DOI: 10.1504/IJVNV.2008.020111

International Journal of Vehicle Noise and Vibration, 2008 Vol.4 No.1, pp.70 - 92

Available online: 26 Aug 2008 *

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