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American Journal of Science and Technology

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Frequency Response of an Automobile with Semi-Independent Suspension System

American Journal of Science and Technology
Vol.1 , No. 3, Publication Date: Jul. 28, 2014, Page: 122-126

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Authors

[1]	Iyer Anirudh R., National Institute of Technology, Warangal, India.
[2]	R. Venkatachalam, National Institute of Technology, Warangal, India.

Abstract

Suspension system of an automobile not only supports the body of the vehicle, engine and passengers but also absorbs shocks arising from the roughness of the road. Most of the present day cars are provided with independent suspension for the front wheels and conventional suspension for the rear wheels. Such a suspension system is referred in this paper as semi-independent suspension system. When the automobile is moving, the roughness of the road keeps giving excitations to the suspension system through tyres. The frequency of excitation is directly proportional to the velocity of the vehicle and inversely proportional to the distance between two undulations of the road. The knowledge of natural frequency is important because the designer would prefer to keep the lowest natural frequency much higher than the frequency of excitation. In this paper, an attempt is made to study the frequency response of the suspension system.

Keywords

Semi-Independent Suspension System, Full Car Model, Natural Frequencies, Frequency Response

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