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Effect of Road Roughness on the Vehicle Ride Comfort and Rolling Resistance
Technical Paper
2006-01-1297
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Road roughness is a very important consideration in evaluating the condition of a given roadway, as it affects the ride comfort for the passenger and vehicle operating cost. This paper deals with an investigation of the influence of road roughness on the vehicle ride comfort and vehicular rolling resistance. The rolling resistance power losses is also investigated. A mathematical model of a quarter vehicle is developed to evaluate vehicle ride comfort in terms of suspension performance criteria. The performance of each suspension system can be assessed quantitatively in terms of discomfort (Acc), suspension working space (SWS) and dynamic tyre load (DTL). The effect of road roughness on the vehicular rolling resistance coefficient is also discussed. The ride performance, power consumed in rolling resistance and power dissipation in suspension for passive and switchable damper suspension systems are finally evaluated. The vehicle itself is treated as a rigid body undergoing vertical motions. The vehicular rolling resistance on road roughness consists of three parts, the rolling resistance of a tire on an absolutely smooth road and that due to road roughness variations and suspension motion.
The obtained results showed that ride comfort deteriorates when road roughness coefficient is increased. The rolling resistance coefficient is not a constant but varies with the road roughness coefficient and the vehicle speed. When road roughness coefficient is increased the rolling resistance force induced by road roughness increases too. The rolling resistance power losses is discussed. Comparisons between passive and switchable damper suspensions systems in terms of ride performance and power dissipation are also discussed.
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Authors
Topic
Citation
Soliman, A., "Effect of Road Roughness on the Vehicle Ride Comfort and Rolling Resistance," SAE Technical Paper 2006-01-1297, 2006, https://doi.org/10.4271/2006-01-1297.Also In
Human Factors in Driving and Automotive Telematics and Seat Comfort
Number: SP-1992; Published: 2006-04-03
Number: SP-1992; Published: 2006-04-03
References
- Soliman, A. M. A. “Evaluation of active suspension systems performance and power requirements” 7 th International Symposium on Advanced Vehicle Control Han University Arnhem, The Netherlands August 23-27 2004
- Paterson, W. D. “Accuracy of calibrated roughness surveys” ASTM STP 884 Gillespie T. D. Sayers Michael American Society for Testing and Materials Philadelphia 1985
- Suh Nam Pyo Hrishikesh V. “Variable Stiffness and Variable Ride-Height Suspension System and Application to Improved Vehicle Dynamics” SAE International Congress and Exposition Detroit, Michigan 2005
- Sharp, R. S. Crolla, D. A. “Road vehicle suspension system design-a review Vehicle System Dynamics 16 167 192 1987
- Rayya, H. Kerry, M. “Heavy vehicle ride and driver comfort” SAE World Congress & Exhibition Detroit, USA Human Factors in Seating Comfort March 2001
- Lu, X. P. “Effect of road roughness on vehicular rolling resistance” ASTM STP 884 Gillespie T. D. Sayers Michael American Society for Testing and Materials Philadelphia 143 161 1985
- Dodds, C. J. Robson, J. D. “The description of road surface roughness” Journal of Sound and Vibration 31 2 175 183 1973
- Robson, J. D. “Road surface description and vehicle response” International Journal of Vehicle Design 1 1 25 35 1979
- Thompson, G. D. “Tire rolling resistance and vehicle fuel consumption” SAE paper 810160 Society of Automotive Engineering Warrendale, PA 1981
- Sayers M. W. Karamihas S. M. “Basic information about measuring and interpreting road profiles” The little book of profiling 1997