This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Study of the Steady State Roll-Response of a Large Rear-Dump Mining Truck
Annotation ability available
Sector:
Language:
English
Abstract
The suspensions of large capacity rear-dump mining trucks are required to operate under extremes of vertical load. This imposes conflicting requirements for the fundamental suspension functions in the achievement of adequate isolation of the sprung mass from road unevenness, and acceptable roll stability and directional control during cornering (particularly when fully-laden). The following factors introduce further complications-high centre-of-gravity of the sprung mass of the laden vehicle, highly non-linear characteristics of the suspension spring elements, and relatively close spacing of the rear springs.
The steady-turn roll response of a conventional 218 tonne (240 short ton) payload vehicle has been analysed to determine the loads imposed on suspension spring-elements and tyres, and to establish the roll behaviour as a function of lateral acceleration. Findings are presented in terms of sprung and unsprung mass angular deflections, suspension spring-element and tyre loads and deflections, and the distribution of roll moment between the front and rear suspensions. A non-linear analytical model has been developed to describe suspension spring element characteristics, whereas measured tyre load-deflection data have been used. The analysis has revealed that a high proportion of the total roll moment is taken up by changes in front suspension loads.
Recommended Content
| Technical Paper | Flexible Body Dynamic Simulation of a Large Mining Truck |
| Technical Paper | Off-Highway Mine Haul Truck Dynamics Simulation |
Authors
Citation
Prem, H. and Dickerson, A., "A Study of the Steady State Roll-Response of a Large Rear-Dump Mining Truck," SAE Technical Paper 921735, 1992, https://doi.org/10.4271/921735.Also In
References
- Ervin, R.D. Mechanics of the Roll-over Process The Mechanics of Heavy Duty Trucks and Truck Combinations . The University of Michigan Engineering Conferences Ann Arbor 1991
- Mai, L. Sweatman, P.F. Articulated Vehicle Stability - Phase II. Tilt Tests and Computer Model Australian Road Research Board Internal Report AIR 323-2 1984
- Winkler, C.B. Scenarios for Regulation of Commercial Vehicle Stability in the US Institute of Road Transport Engineers of New Zealand Fourth International Heavy Vehicle Seminar Auckland 1992
- France, J.J. Star R.D. The Hydrair® II Truck Suspension SAE Paper No. 710708 1971
- Ellis, J.R. Vehicle Dynamics London Business Books Limited 1969
- Topping, R.W. A Primer on Non-linear, Steady State Vehicle Turning Behaviour SAE Paper No. 741096 1974
- Deslandes, J.V. Dickerson, A.W. A New Concept for Mine Haul Route Surface Maintenance Proceedings of the International Symposium on Off-Highway Haulage in Surface Mines Edmonton 1989