01552264

Component

https://doi.org/10.3141/2525-09

Tire–road interaction addresses safety with respect to braking friction and energy efficiency in the context of rolling resistance. These phenomena are coherent, but their engineering solutions can be contradictory. For example, highly skid-resistant surfaces may not be ideal for fuel economy, but surfaces with low rolling resistance may be prone to skidding. Several experimental and numerical studies have investigated the individual phenomena, but insufficient attention has been paid to studying them coherently. The present study computed braking friction and rolling resistance for various operating parameters and their coherent response for each parameter with the use of a thermomechanical contact algorithm. Micromechanical finite element simulations of a rolling or braking pneumatic tire against selected asphalt concrete surfaces were performed for various operating conditions, such as tire load, inflation pressure, speed, and ambient air and pavement temperatures. The coefficients of braking friction and rolling resistance were found to decrease with the inflation pressure and the temperature and to increase with the wheel load. The braking friction coefficient was found to decrease with the speed, in contrast to the rolling resistance coefficient, which increases with the same parameter. A full-skidding tire registered lower braking friction than a 20% slipping tire. Also, an asphalt surface with higher macrotexture offered higher braking friction and higher rolling resistance, and vice versa.

01592675

15-4116

English

pp 79–90

2015

Transportation Research Record: Journal of the Transportation Research Board

9780309369497

Print

Figures (9) ; Photos; References (20)

Asphalt concrete pavements; Atmospheric temperature; Braking; Coefficient of friction; Finite element method; Loads; Macrotexture; Rolling contact; Rolling resistance; Speed; Temperature; Tire pressure

Operating parameters

Highways; Materials; Pavements; I31: Bituminous Binders and Materials

TRIS, TRB, ATRI

Dec 30 2014 1:20PM

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• Backcalculation with an Implanted Inertial Sensor
• Detecting and Correcting Localized Roughness Features
• Dynamic Viscoelastic Analysis of Falling Weight Deflectometer Deflections for Rigid and Flexible Pavements
• Evaluation and Validation of a Model for Predicting Pavement Structural Number with Rolling Wheel Deflectometer Data
• Importance of Rubber Characteristics in the Frictional Response of Asphalt Concrete Surfaces
• Measurement of Pavement Treatment Macrotexture and Its Effect on Bicycle Ride Quality
• Monitoring Pavement Surface Macrotexture and Friction: Case Study
• Peak Friction Prediction Model Based on Surface Texture Characteristics
• Performance Evaluations of Unbound Aggregate Permanent Deformation Models for Various Aggregate Physical Properties
• Roughness-Induced Pavement–Vehicle Interactions: Key Parameters and Impact on Vehicle Fuel Consumption