Table of Contents
International Scholarly Research Notices
Volume 2015, Article ID 974020, 6 pages
Research Article

Equivalent Air Spring Suspension Model for Quarter-Passive Model of Passenger Vehicles

1Department of Mechanical Engineering, Thi-Qar University, Nasiriyah, Iraq
2Department of Mechanical, Aerospace and Civil Engineering, Brunel University, Uxbridge UB8 3PH, UK
3Department of Mechanical Engineering, Basrah University, Basrah, Iraq

Received 15 January 2015; Revised 19 April 2015; Accepted 20 April 2015

Academic Editor: Majid Ghassemi

Copyright © 2015 Haider J. Abid et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper investigates the GENSIS air spring suspension system equivalence to a passive suspension system. The SIMULINK simulation together with the OptiY optimization is used to obtain the air spring suspension model equivalent to passive suspension system, where the car body response difference from both systems with the same road profile inputs is used as the objective function for optimization (OptiY program). The parameters of air spring system such as initial pressure, volume of bag, length of surge pipe, diameter of surge pipe, and volume of reservoir are obtained from optimization. The simulation results show that the air spring suspension equivalent system can produce responses very close to the passive suspension system.