Location of Repository

Improvement of Passengers Ride Comfort in Rail Vehicles Equipped with Air Springs

By H. Sayyaadi and N. Shokouhi

Abstract

Abstract—In rail vehicles, air springs are very important isolating component, which guarantee good ride comfort for passengers during their trip. In the most new rail–vehicle models, developed by researchers, the thermo–dynamical effects of air springs are ignored and secondary suspension is modeled by simple springs and dampers. As the performance of suspension components have significant effects on rail–vehicle dynamics and ride comfort of passengers, a complete nonlinear thermo–dynamical air spring model, which is a combination of two different models, is introduced. Result from field test shows remarkable agreement between proposed model and experimental data. Effects of air suspension parameters on the system performances are investigated here and then these parameters are tuned to minimize Sperling ride comfort index during the trip. Results showed that by modification of air suspension parameters, passengers comfort is improved and ride comfort index is reduced about 10%. developed by researchers [1]-[7], the thermo–dynamical effects of air springs are ignored and secondary suspension is modeled by simple springs and dampers. The air spring response is independent of the excitation frequency [8] and it behaves such as stress relaxation function [9]. In addition, it has asymmetric hysteresis loop, which is independent of the excitation frequency [10]. These behaviors bring difficulties for using frictional or columbic description to approximate the air spring characteristics. Stress relaxation function of CBNFR rubbers is shown in Fig. 1. Keywords—Air spring, Ride comfort improvement, Thermo

Topics: dynamical effects
Year: 2011
OAI identifier: oai:CiteSeerX.psu:10.1.1.192.9461
Provided by: CiteSeerX
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://citeseerx.ist.psu.edu/v... (external link)
  • http://www.waset.org/journals/... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.