Title: Modelling and simulation of non-linear vibration absorber attached to automotive system

Authors: L.A. Kumaraswamidhas; B. Sudharsan; S. Girish Krishna; P. Velmurugan

Addresses: Department of Mechanical Engineering, National Institute of Technology Tiruchirapalli, Tamilnadu, 621 015 India. ' Department of Mechanical Engineering, National Institute of Technology Tiruchirapalli, Tamilnadu, 621 015 India. ' Department of Mechanical Engineering, National Institute of Technology Tiruchirapalli, Tamilnadu, 621 015 India. ' Department of Mechanical Engineering, National Institute of Technology Tiruchirapalli, Tamilnadu, 621 015 India

Abstract: This paper deals with the study of automotive seat vibration when a non-linear vibration absorber (NVA) is attached to it at different positions. A quarter car model is considered with the passenger modelled as a lumped mass as well as an ISO model. Two main configurations of the NVA are considered and the more efficient position of the absorber is selected using methods including jerk analysis and rattle space distance. The passenger comfort is evaluated by calculating the jerk factor and the relation is plotted against the damping coefficient and road deflection to help choose the optimal absorber. The solutions of the differential equations are obtained using Simulink. The surface plots introduced a reduction of 30% in the jerk experienced at the seat using suitable absorbers with the calculated parameters.

Keywords: quarter car model; nonlinear vibration; vibration absorbers; jerk analysis; rattle space distance; simulation; modelling; automotive seats; seat vibration; automobile industry; passenger comfort; damping coefficient; road deflection; vehicle vibration.

DOI: 10.1504/IJVSMT.2012.049428

International Journal of Vehicle Systems Modelling and Testing, 2012 Vol.7 No.4, pp.390 - 404

Received: 08 Mar 2011
Accepted: 18 Feb 2012
Published online: 13 Sep 2014 *

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