Effect of Surface Friction on Tire-Pavement Contact Stresses during Vehicle Maneuvering
Author
Wang, Hao
Al-Qadi, Imad L.
Stanciulescu, Ilinca
Date
2013Citation
Published Version
Abstract
Accurate modeling of tire-pavement contact behavior plays an important
role in the analysis of pavement performance and vehicle stability control. A threedimensional
(3-D) tire-pavement interaction model was developed using the finite
element method (FEM) to analyze the forces and contact stresses generated during
vehicle maneuvering (free rolling, braking/acceleration, and cornering). A pneumatic
radial-ply tire structure with rubber and reinforcement was simulated. The steady-state
tire rolling process was simulated using an Arbitrary Lagrangian Eulerian (ALE)
formulation. An improved friction model that considers the effect of sliding speed on
friction coefficients was implemented to analyze the effects of pavement surface friction
on contact stresses, friction forces, and cornering forces. The results show that the
magnitudes and non-uniformity of contact stresses are affected by vehicle maneuvering
conditions. As the pavement surface friction increases, the tangential tire-pavement contact stresses at various rolling conditions (free rolling, braking/acceleration, and
cornering) and the vertical contact stresses at the cornering condition increase. It is
reasonable to use the constant friction coefficient when predicting tire-pavement contact
stresses at the free rolling condition or at the cornering condition with small slip angles.
However, it is important to use the sliding-velocity-dependent friction model when
predicting the friction force at tire braking.
Keyword
tire-pavement contact; friction; vehicle maneuvering; sliding speed; finite element method
Type
Journal article