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Transient Analysis of Vehicle Passive Suspension System

Nagendra Iranna Jamadar and K K Dhande
Department of Mechanical Engineering, Padmashree Dr. D. Y. Patil Institute of Engineering & Technology, Pimpri, Pune, India

Abstract—The study emphasizes transient characteristic of vehicle passive suspension system. The onefourth suspension system called quarter car suspension system which includes sprung and un-sprung masses having components to support axle, wheel and body of vehicle. The analysis is carried out by simulation for various speeds of vehicle. Modal analysis is carried out to get frequencies of the modeled system and then harmonic response characteristics are obtained for the sprung and un-sprung masses at the various frequency ranges. The transient analysis helps to obtain the behavior of system for time varying excitations. In order to facilitate the computation from time domain to frequency domain, the steps of evaluation are programmed using MATLAB software. The transient response for different vehicle speeds for both sprung and un-sprung masses of system at the various time intervals are plotted. The effect of components of suspension system on vehicle performance is analyzed. The presented analysis sets a benchmark for evaluation of performance characteristics of active suspension system.

Index Terms—Passive, Quarter suspension, Sprung mass, Un-sprung mass, Modal, Transient

Cite: Nagendra Iranna Jamadar* and K K Dhande, "Transient Analysis of Vehicle Passive Suspension System," International Journal of Mechanical Engineering and Robotics Research, Vol. 3, No. 3, pp. 451-464, July 2014.