01373457

Component

Analytical and numerical tools that can provide reliable and accurate estimates of wet pavement frictional resistance would preclude the need for time consuming field tests and be invaluable in friction management programs. Therefore, many research efforts have been made to develop such tire pavement friction predictive tools. However, due to the complexity of the problem, most existing tools are developed based on several assumptions while their predictions are not verified with field data. This study is focused on the evaluation of two particular prediction methods that can be used to predict friction on a smooth tire sliding on a rough moist pavement by comparing the corresponding predictions with the results of field experiments. A 3-dimensional finite element model (FEM) formulated in ANSYS software and an analytical method based on computing hysteresis friction from viscous energy dissipation are the two methods considered in this study. Both prediction tools are capable of rough pavement surface texture while the FEM method can even incorporate the tire geometric and material properties. Predictions of the two methods based on the macrotexture data on a selected test surface provide reasonably accurate results when compared to the corresponding field evaluation. The main finding of the investigation is the availability of relatively easily executed analytical methodologies that are comparable in accuracy to more rigorous finite element tools.

This paper was sponsored by TRB committee AFD90 Surface Properties - Vehicle Interaction

01362476

12-4413

English

15p

2012

Transportation Research Board 91st Annual Meeting

Digital/other

Figures; References

Field tests; Finite element method; Macrotexture; Mathematical prediction; Rolling contact; Roughness; Sliding friction; Tires

Analytical models; Finite element model

Highways; Pavements; I23: Properties of Road Surfaces

Transportation Research Board Annual Meeting 2012 Paper #12-4413

TRIS, TRB

Feb 8 2012 5:24PM