This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Pneumatic Damping of Vehicle Tires to Improve Ride Quality
Annotation ability available
Sector:
Language:
English
Abstract
A tire/wheel system with two air chambers connected by on orifice or capillary was studied to determine the potential for increasing tire damping to improve ride quality. 6-DOF computer simulations of automobiles and agricultural tractors showed that ride quality can be improved by increasing tire damping. A linearized tire model was used to demonstrate the damping concept's potential and the results were compared with a laboratory test using a conventional tire connected to a surge tank. Numerical methods were used to determine the damping obtained using a compliant auxiliary chamber. The study indicates that for vehicles without suspensions significant ride improvements are possible using conventional tires with small compliant auxiliary chambers, and for vehicles with suspensions, noticeable ride improvement could be achieved if new tire designs are developed in which a greater portion of the tire stiffness is caused by deflection induced pressure.
Recommended Content
Technical Paper | A semi-analytical approach for vehicle ride simulation |
Technical Paper | Analysis of the Handling and Ride Comfort Characteristics of a Medium Bus in a Single Lane Change Manoeuvre |
Authors
Citation
Bachrach, B. and Rivin, E., "Pneumatic Damping of Vehicle Tires to Improve Ride Quality," SAE Technical Paper 840746, 1984, https://doi.org/10.4271/840746.Also In
References
- Rasmussen R.E. Cortese A.D. “Dynamic Spring Rate Performance of Rolling Tires” SAE paper 680408
- Moulton A.E. Best A. “Hydragas Suspension” SAE paper 790374
- Stayner R.M. Hilton D.J. Moran P. “Protecting the Tractor Driver from Low-Frequency Ride Vibration” “Off-Highway Vehicles, Tractors and Equipment” Mechanical Engineering Publications Limited London/N.Y. CP11-1975 39 47
- Maclaurin E.B. Elder J.W. “Design of Off-Road Vehicles for Higher Speeds,” “Off-Highway Vehicles, Tractors and Equipment” Mechanical Engineering Publications Limited London/N.Y. CP11-1975 115 134
- Patil K.M. Palanichamy M.S. Ghista D.N. “Dynamic Response of Human Body Seated on a Tractor and Effectiveness of Suspension Systems” Proc. of 21st STAPP Car Crash Conference SAE Publication P-73 1977
- Clark S.K. “Mechanics of Pneumatic Tires” National Bureau of Standards Monograph 122 1977
- 4,289,187
- Shearer J.L. “Continuous Control of Motion with Compressed Air” Trans. ASME 78 233 1956 “Pneumatic Drives” Fluid Power Control Blackhorn Reethof Shearer M.I.T. Press 1960
- Cavanaugh R.D. “Air Suspension and Servo-Controlled Isolation Systems” Shock and Vibration Handbook Harris C.M. Crede C.E. McGraw-Hill 1961
- Soliman J.I. Tajer-Ardabili D. “Self-Damped Pneumatic Isolator for Variable Frequency Excitation” Journal Mechanical Engineering Science 8 3 1966 284
- Esmailzadeh E “Optimization of Pneumatic Vibration Isolation System for Vehicle Suspension” Transactions of the ASME, Journal of Mechanical Design 100 July 1978 500
- Bachrach B.I. Rivin E. “Analysis of a Damped Pneumatic Spring” Journal of Sound and Vibration 86 2 January 1983 191 197
- Smith C.C. “On Using the ISO Standard to Evaluate the Ride Quality of Broad-Band Vibration Spectra in Transportation Vehicles” Transactions of the ASME, Journal of Dynamic Systems, Measurement, and Control 98 4 Dec 1976 440 443
- Crolla D.A. “A Theoretical Analysis of the Ride Vibration of Agricultural Tractor and Trailer Combinations” Vehicle Systems Dynamics 9 1980 237 260
- Bachrach B.I. Rivin E. “Automobile Wheel with Pneumatic Damping” ASME Paper 83-DET-17
- Potts G.R. Csora T.T. “Tire Vibration Studies: The State of the Art” Tire Science and Technology, TSTCA 3 3 Aug. 1975 196 210