A Hybrid Approach to Model the Temperature Effect in Tire Forces and Moments

Paper #:
  • 2017-01-9676

Published:
  • 2017-03-14
Pages:
12
Abstract:
Tire is an integral part of any vehicle which provides contact between the vehicle and the surface on which it moves. Forces and moments generated at the tire-road interaction imparts stability and control of motion to the vehicle. These forces and moments are functions of many variables such as slip, slip angle, contact pressure, inflation pressure, coefficient of friction, temperature, etc. This paper deals with the effect of temperature on the lateral force, the longitudinal force and the self-aligning moment. The analysis is done at different tire surface temperatures such as 〖20〗^oC, 〖40〗^oC, and 〖60〗^oC. Since the experimental set up with the mounted tire is complex and expensive, we use a hybrid approach in which we take the results from the experiments done by the researchers on a sample piece of tire rubber at various temperatures. Then, we do the steady state analysis using finite element method in ABAQUS considering the variation of coefficient of friction, slip speed and the elastic modulus of rubber with temperature. The steady state numerical results from ABAQUS at different surface temperatures are compared with the modified PAC2002 tire model to capture the temperature effect. After validating the variations of steady state forces and moments from ABAQUS with literature, we obtain the parameters associated with the modified PAC2002. Using these parameters corresponding to different temperature, we perform transient analysis of tire forces and moment of a car model in ADAMS under different driving conditions such as the double lane change, acceleration, and braking condition, respectively. We found that the increases in temperature may lead to advancement of slipping of the wheel under acceleration and wheel locking under braking condition. Consequently, the analysis presented in the paper may help in improving the design of electronic stability control of the vehicle by including the temperature related effects.
Also in:
  • SAE International Journal of Passenger Cars - Mechanical Systems - V125-6
  • SAE International Journal of Passenger Cars - Mechanical Systems - V126-6
  • SAE International Journal of Passenger Cars - Mechanical Systems - V126-6EJ
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