Title: Vibration attenuation of automotive vehicle engine using periodic mounts

Authors: Saeed Asiri

Addresses: Faculty of Engineering, King Abdulaziz University, P.O. Box 80244, Jeddah 21531, Saudi Arabia

Abstract: In this paper, a new class of periodic mounts for isolating the vibration transmission from vehicle engine to the car body and seats is presented. Periodic mounts exhibit unique dynamic characteristics that make them act as mechanical filters for wave propagation. As a result, waves can propagate along the periodic mounts only within specific frequency bands called the |Pass Bands| and wave propagation is completely blocked within other frequency bands called the |Stop Bands|. The experimental arrangements, including the design of mounting systems with plain and periodic mounts are studied first. The effectiveness of the periodicity on the vibration levels of mounting systems has been demonstrated theoretically and experimentally. The experimental results are compared with the theoretical predictions.

Keywords: transfer matrix; vibration isolation; periodic mounts; periodic structures; vehicle noise; vehicle vibration; vibration transmission.

DOI: 10.1504/IJVNV.2007.015178

International Journal of Vehicle Noise and Vibration, 2007 Vol.3 No.3, pp.302 - 315

Published online: 20 Sep 2007 *

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