This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Coupling of Driveline and Body Vibrations in Trucks
Annotation ability available
Sector:
Language:
English
Abstract
Torsional motion of a truck driveline system is coupled with other motions of its components. In this paper, a comprehensive model of the truck driveline and body for vibration analysis was developed. Coupling of the torsional vibration of the truck driveline system with the body fore-aft and vertical vibrations was investigated. A mathematical model, including the torsional vibration of the driveline system and the whole body vibrations of the truck, was constructed. The driveline system was modelled as a set of inertia discs linked together by massless springs and the tyre was represented as having massless circumferential band which is elastically connected to the carcass with the bands being subject to longitudinal forces at the road surface. System behaviour at steady and transient runs was developed. Results were generated for the time history responses of the system due to engine fluctuating torque in steady running and due to friction torque induced by clutch during engagement in transient running. System response was investigated by integration of the system equation of motion using Runge-Kutta method and a computer program in FORTRAN was developed for this purpose. The system was found to be unstable in torsional and fore-aft motions for certain values of the system parameters due to self excitation force induced from the tyre/road contact and friction torque due to clutch engagement. The effect of several important design parameters on the system behaviour was investigated.
Recommended Content
Citation
Rabeih, E. and Crolla, D., "Coupling of Driveline and Body Vibrations in Trucks," SAE Technical Paper 962206, 1996, https://doi.org/10.4271/962206.Also In
Issues in Commercial Vehicle Powertrain Design and Development
Number: SP-1203; Published: 1996-10-01
Number: SP-1203; Published: 1996-10-01
References
- Sharp, R.S. “The Nature and Prevention of Axle Tramp” Proc. I Mech E 184 3 41 54 1969
- Sharp, R.S. Jones, C.J. “Self-Excited Vibrations of Truck Tandem Axle Suspension and Transmission System” Proc. 7th IAVSD Symposium on Dynamics of Vehicle on Roads and Tracks Cambridge (UK) 66 80 1981
- Sharp, R.S. “The Mechanics of Axle Tramping Vibrations” I Mech E, Paper C137/84 113 120 1984
- Zhanqi, W. et al “Research on the Coupling Power Train Torsional Vibration With Body fore-aft and Vertical Vibration of a 4x2 Vehicle” I Mech E, Paper No. 925067 219 223 1992
- Pacejka, H.B. “Tyre Factors and Front Wheel Vibrations” Int. Journal of Vehicle Design 1 2 97 119 1980
- Rabeih, E.M. “Torsional Vibration Analysis of Automotive Drivelines” University of Leeds UK