Tire Transient Cornering Characteristics on μ-step Road

doi:10.3901/JME.2017.22.143

Abstract

Abstract: Tire transient cornering characteristics on μ-step road is vital to vehicle directional stability and analyzed through simulation and test in this paper. Firstly, a tire model is derived using for tire transient cornering characteristics simulation on μ-step road. The tire tread deformation characteristics during motion are descripted with details by discretizing the tread elements at the contact zone and considering the complex deformation of the carcass. And the general expressions of the tire force with respect to the tread deflection are deduced, such that the tire force could be calculated from arbitrary tread deflection. Subsequently, the model is verified by tire transient cornering characteristics test data on μ-step road. Finally, the tire transient lateral force and aligning moment characteristics are simulated and analyzed by utilizing the transient tire model. Meanwhile, the underlying fundamental understanding of tire transient cornering characteristics on μ-step road is revealed. And the influence of tire carcass stiffness, slip angle and μ-step amplitude on tire transient characteristics is also presented. Analysis results reveal that the lateral translation stiffness of the carcass plays a significant influence on the tire lateral force relaxation length. The lateral force relaxation length is decreasing as the increasing of the lateral translation stiffness. This study would be beneficial to tire transient characteristics semi-empirical modeling and vehicle directional stability analysis and relative control strategy development on μ-step road.

Key words: cornering, tire characteristics, tire modeling, transient, μ-step road

CLC Number:

U461

CHEN Ping, XU Nan, BAI Fan, GUO Konghui. Tire Transient Cornering Characteristics on μ-step Road[J]. Journal of Mechanical Engineering, 2017, 53(22): 143-151.

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