Title: Pneumatic suspension damping characterisation with equivalent damping ratio

Authors: Zhihong Yin; Amir Khajepour; Dongpu Cao; Babak Ebrahimi; Konghui Guo

Addresses: School of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China ' Waterloo Center for Automotive Research (WatCAR), University of Waterloo, ON N2L 3G1, Canada ' Waterloo Center for Automotive Research (WatCAR), University of Waterloo, ON N2L 3G1, Canada ' Waterloo Center for Automotive Research (WatCAR), University of Waterloo, ON N2L 3G1, Canada ' College of Automotive Engineering, Jilin University, Changchun 130025, China

Abstract: The damping property of a pneumatic suspension with orifice-type fluidic resistance is characterized in this study. The nonlinear and linear models for the suspension system are first formulated and experimentally verified. The verified linear model is employed to derive a new pneumatic damping measure, equivalent damping ratio, based on which a pneumatic Damping Ratio Diagram (PDRD) is proposed. A systematic investigation on pneumatic suspension damping is then conducted. The results and analyses demonstrate that PDRD can be an effective tool for the calculation/design of pneumatic damping, where to properly choose pneumatic suspension design parameters can help yield desirable pneumatic damping.

Keywords: vehicle dynamics; pneumatic suspension; equivalent damping ratio; orifice-type fluidic resistance; vehicle suspension; modelling; pneumatic damping; suspension design.

DOI: 10.1504/IJHVS.2012.047919

International Journal of Heavy Vehicle Systems, 2012 Vol.19 No.3, pp.314 - 332

Received: 08 May 2021
Accepted: 12 May 2021

Published online: 14 Jul 2012 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article