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Articulated Vehicle Stability-The Role Of Vehicle Design
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English
Abstract
Heavy vehicles with high centres of gravity are prone to rollover accidents. For a given height and width, stability is affected by suspension design. In articulated vehicles, the matching of the tractor and trailer suspensions, as well as the degree of coupling between tractor and trailer, affects the stability of the combination. A number of loaded articulated combinations with high centres of gravity were tested on a specially-constructed tilt deck. Parameters including lateral load transfer at each axle group, deflections of the sprung and unsprung parts of the suspensions, movement at the fifth wheel coupling and torsional deflection of the chassis were measured up to the point of first wheel lift. A computer model of the rollover process was also developed. The effects of suspensions, couplings, tyres and chassis on the rollover limit are discussed. Suspensions have the greatest effect, causing the lateral acceleration at rollover to vary from .36 g to .45 g among the range of vehicles tested. Proposals for a standard test of stability are discussed.
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Sweatman, P. and Mai, L., "Articulated Vehicle Stability-The Role Of Vehicle Design," SAE Technical Paper 845055, 1984, https://doi.org/10.4271/845055.Also In
References
- Organisation of Economic Co-operation and Development. Impacts of Heavy Freight Vehicles (OECD : Paris) 1983
- Kemp R. N. Chinn B. P. Brock G. Articulated roll stability - methods of assessment and effects of vehicle characteristics. Transport and Road Research Laboratory (UK), Report 788 1978
- Ervin R. D. Fancher P. S. Gillespie T. O. Winkler C. B. Wolfe A. Ad hoc study of certain safety-related aspects of double-bottomed tankers. Highway Safety Research Institute Report UM-HSRI-78-18-1 1978
- Strandberg L. Nordstrom O. Nordmark S. Safety problems in commercial vehicle handling. National Swedish Road and Traffic Research Institute Report 82A 1975
- Miller D. W. G. Barter N. F. Rollover of articulated vehicles. I. Mech. E. Conference on Vehicle Safety Legislation. Paper C203/73 1973
- Sweatman P. F. A study of dynamic wheel forces in axle group suspensions of heavy vehicles. Australian Road Research Board Special Report No. 27 1983
- Mai L. Sweatman P. F. Articulated vehicle stability. Phase II - Tilt Tests and Computer Model. Australian Road Research Board Internal Report AIR 323-2 April 1984
- Ervin R. D. Mallikarjunarao C. Gillespie T. D. Future configuration of tank vehicles hauling flammable liquids in Michigan. Highway Safety Research Institute Report UM-HSRI-80-73-1 1980
- Standards Association of Australia Road Tank Vehicles for Flammable Liquids. AS2016 1977