Effect of friction on rolling tire–pavement interaction.
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2010-11-01
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Alternative Title:Effect of friciton on rolling tire-pavement interaction
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Abstract:Accurate modeling of tire‐pavement contact behavior (i.e., distribution of contact tractions at the
interface) plays an important role in the analysis of pavement performance and vehicle driving safety.
The tire‐pavement contact is essentially a rolling contact problem. Many aspects, such as the transient
contact with nonlinear frictional properties at the tire‐pavement interface, make the rolling contact
problem more difficult than it may appear at first glance. The nonlinear frictional contact could
introduce numerical difficulties into the finite element method (FEM) solution because the contact area
and distribution of the contact tractions are not known beforehand. Therefore, it is appealing to
formulate and implement high‐fidelity FE models capable of accurately simulating the tire‐pavement
contact behavior. However, obtaining an accurate frictional relationship is difficult for tire‐pavement
interaction. The friction between the tire and pavement is a complex phenomenon depending on many
factors, such as viscoelastic properties of rubber, pavement texture, temperature, vehicle speed, slip
ratio, and normal pressure. Field measurements have clearly shown that the friction between the tire
and pavement is dependent of vehicle speed and the slip ratio at the vehicle maneuvering processes.
In this research, a three‐dimensional (3‐D) tire‐pavement interaction model is developed using FEM to
analyze the tire‐pavement contact stress distributions at various rolling conditions (free rolling,
braking/accelerating, and cornering). In addition, existing friction models for tire‐pavement contact are
reviewed and the effect of interfacial friction on the tire‐pavement contact stress distributions is
investigated.
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