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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基于简化实验模态分析的载重轮胎滚动阻力特性评价新方法

提出了一种评估卡车轮胎滚动阻力特性的新方法，该方法通过使用聚偏氟乙烯 (PVDF) 压电薄膜从轮胎表面进行单点振动采样，提出了简化模态实验。模态实验采用三个卡车轮胎，采用半功率带宽法识别三个轮胎的阻尼特性。轮胎的阻尼特性按其数值分级。将这些值与其对应的滚动阻力系数进行比较，以显示它们的相关关系。由模态试验和滚动阻力试验得到的试验结果，表明轮胎的模态参数和半功率带宽与滚动阻力系数完全相关。此外，轮胎的阻尼比与轮胎之间的滚动阻力系数有很好的相关性。总体而言，所提出的评估方法可以有效地评估轮胎的滚动阻力特性，使其成为传统轮胎滚动阻力实验的简单且经济的替代方案。