Passenger car, truck and bus tyres. Methods of measuring rolling resistance. Single point test and correlation of measurement results

The aerostatic circular thrust bearing was taken as a study subject. The numerical simulation method was used to calculate the flow passage. Meanwhile, the single-point testing method was used to test the pressure distribution. The simulation and experiment measurement results were compared and analyzed. The results show that: The single-point testing method is effective to capture the change of flow characteristics. The overall results of simulation and testing coincide with each other well. In the range of cone cavity, the flow pattern for the gas is turbulent flow, and the flow field should be divided into different zones for simulation.

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PASSENGER CAR WIND AND ROLLING RESISTANCE

10.4271/490043 ◽

1949 ◽

Cited By ~ 2

Author(s):

K. A. Stonex

Keyword(s):

Rolling Resistance ◽

Passenger Car

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A novel evaluation on rolling resistance characteristics of truck tire through the simplified experimental modal analysis

Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering ◽

10.1177/0954407020920032 ◽

2020 ◽

Vol 234 (12) ◽

pp. 2771-2782

Author(s):

Chengwei Zhu ◽

Jingjing Yan ◽

Ye Zhuang ◽

Xueliang Gao ◽

Qiang Chen ◽

...

Keyword(s):

Polyvinylidene Fluoride ◽

Evaluation Method ◽

Single Point ◽

Rolling Resistance ◽

Damping Characteristics ◽

Truck Tire ◽

Truck Tires ◽

Half Power ◽

Resistance Coefficients ◽

Correlative Relationship

A novel evaluation method for the rolling resistance characteristics of truck tire is proposed, in which a simplified modal experiment is suggested through a single-point vibration sampling from the tire surface with a polyvinylidene fluoride (PVDF) piezoelectric film. Three truck tires are utilized in the modal experiments, and the half-power bandwidth method is employed to identify the damping characteristics of the three tires. The damping characteristics of the tires are ranked by their values. These values are compared with their corresponding rolling resistance coefficients to manifest their correlative relationship. The experimental results, which are obtained from the modal experiment and the rolling resistance test, indicate that the modal parameters and the half-power bandwidth of the tire are exactly correlated to the rolling resistance coefficients. Furthermore, the damping ratios of the tires are correlated well with the rolling resistance coefficients among the tires. Overall, the proposed evaluation method could effectively evaluate the rolling resistance characteristics of the tire, which enable it to be a simple and economical alternative over the conventional tire rolling resistance experiments.

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Investigations on Rolling Resistance of Nanocomposite Based Passenger Car Radial Tyre Tread Compounds Using Simulation Technique

Tire Science and Technology ◽

10.2346/1.3637744 ◽

2011 ◽

Vol 39 (3) ◽

pp. 210-222 ◽

Cited By ~ 4

Author(s):

S. Ghosh ◽

R.A. Sengupta ◽

G. Heinrich

Keyword(s):

Carbon Black ◽

Loss Tangent ◽

Elastic Strain ◽

Strain Energy ◽

Elastic Strain Energy ◽

Rolling Resistance ◽

Rubber Matrix ◽

Styrene Butadiene Rubber ◽

Butadiene Rubber ◽

Passenger Car

Abstract Tyre rolling resistance is a key performance index in the tyre industry that addresses the environmental concern. Reduction of tyre rolling resistance is a major challenge so as to lower the fuel consumption, which could be achieved by changing both design as well as compound formulation. In this paper, rolling resistance of 205/60R15 as well as 155/70R14 passenger car radial tyre with nanocomposite based tread compounds were evaluated using finite element (FE) analysis. The energy dissipation in the tyre was evaluated using the product of elastic strain energy and the loss tangent of materials through post processing using a rolling resistance code. The elastic strain energy was obtained through steady state rolling simulation of tyre using Abaqus software and the loss tangent was measured in the laboratory by viscoanalyzer. A good correlation of rolling resistance was observed between simulation and experimental results. Nanocomposites used in this study were prepared based on solution styrene butadiene rubber and polybutadiene rubber blends with either organoclay and carbon black or organoclay and silica dual fillers. Carboxylated nitrile rubber, a polar rubber, was used as compatibilizer to facilitate the clay dispersion in rubber matrix. Compared to general carbon black or silica tread compounds, substantial improvement of rolling resistance was predicted by FE simulation with nanocomposite based tread compounds containing dual fillers organoclay-carbon black or organoclay-silica.

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