Zheng Binshuang, Tang Junyao, Chen Jiaying, Zhao Runmin, Huang Xiaoming
School of Modern Posts, Nanjing University of Posts and Telecommunications, Nanjing 210023, China.
School of Transportation, Southeast University, Nanjing 211189, China.
Materials (Basel). 2022 Jun 12;15(12):4173. doi: 10.3390/ma15124173.
To obtain the tire−pavement peak adhesion coefficient under different road states, a field measurement and FE simulation were combined to analyze the tire−pavement adhesion characteristics in this study. According to the identified texture information, the power spectral distribution of the road surface was obtained using the MATLAB Program, and a novel tire hydroplaning FE model coupled with a textured pavement model was established in ABAQUS. Experimental results show that here exists an “anti-skid noncontribution area” for the insulation and lubrication of the water film. Driving at the limit speed of 120 km/h, the critical water film thickness for the three typical asphalt pavements during hydroplaning was as follows: AC pavement, 0.56 mm; SMA pavement, 0.76 mm; OGFC pavement, 1.5 mm. The road state could be divided into four parts dry state, wet sate, lubricated state, and ponding state. Under the dry road state, when the slip rate was around 15%, the adhesion coefficient reached the peak value, i.e., around 11.5% for the wet road state. The peak adhesion coefficient for the different asphalt pavements was in the order OGFC > SMA > AC. This study can provide a theoretical reference for explaining the tire−pavement interactions and improving vehicle brake system performance.
为获取不同道路状态下轮胎与路面的峰值附着系数，本研究结合现场测量与有限元模拟来分析轮胎与路面的附着特性。根据识别出的纹理信息，利用MATLAB程序获得路面的功率谱分布，并在ABAQUS中建立了一种新型的结合纹理路面模型的轮胎滑水有限元模型。实验结果表明，水膜的隔离和润滑存在一个“防滑无效区域”。以120 km/h的极限速度行驶时，三种典型沥青路面在滑水过程中的临界水膜厚度如下：AC路面为0.56 mm；SMA路面为0.76 mm；OGFC路面为1.5 mm。道路状态可分为四个部分：干燥状态、潮湿状态、润滑状态和积水状态。在干燥道路状态下，当滑移率约为15%时，附着系数达到峰值，即在潮湿道路状态下约为11.5%。不同沥青路面的峰值附着系数顺序为OGFC＞SMA＞AC。本研究可为解释轮胎与路面相互作用及改善车辆制动系统性能提供理论参考。
