Browse Publications Technical Papers 2007-01-0816

Analytical Tire Forces and Moments Model With Validated Data 2007-01-0816

Tire models used in vehicle dynamics simulation and tire-related research rely basically on curve fitted experimental data and empirical adjustments of theoretical models. The complexity of tire mechanics has limited the development of a complete and reasonable analytical force theory. This paper validates an analytical tire model recently developed by the author. This theoretical model uses physical parameters: lateral and longitudinal stiffnesses, aligning moment pneumatic trail, overturning moment arm, lateral force relaxation length, and friction properties. These are standard mechanical properties that characterize the force generating capacity of tires. The validation procedure compares the theoretical ground forces and moments with experimental data. Tire data measured on a flat track tire testing machine are used in this validation. It covers the full range of longitudinal, lateral, and combined slips. This model can be applied in vehicle dynamics simulations up to extreme handling maneuvers and can be used to assess the effect of a specific tire's physical property on the performance of vehicle motion and stability. This validated analytical tire model is an important advancement in the field of tire force and moment predictions and puts more emphasis on the mechanics of contact rather than curve-fitting practices.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:

Multibody System/Finite Element Simulation of Belt Drives and Rubber Tracked Vehicles


View Details


Determination of Critical Speed, Slip Angle and Longitudinal Wheel Slip based on Yaw Marks Left by a Wheel with Zero Tire Pressure


View Details


Effectiveness of the Slip Circle, “COMBINATOR”, Model for Combined Tire Cornering and Braking Forces When Applied to a Range of Tires


View Details