Peng Yi, Li Joshua Qiang, Zhan You, Wang Kelvin C P, Yang Guangwei
School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China.
School of Civil & Environmental Engineering, Oklahoma State University, Stillwater, OK 74078, USA.
Materials (Basel). 2019 Nov 21;12(23):3821. doi: 10.3390/ma12233821.
Skid resistance is an important surface characteristic that influences roadway safety. Various studies have been performed to understand the interaction between pavement and tires through numerical simulation for skid resistance prediction. However, the friction parameters required for simulation inputs are generally determined by objective assumptions. This paper develops a finite element method (FEM)-based skid resistance simulation framework using in-situ 3D pavement surface texture and skid resistance data. A 3D areal pavement model is reconstructed from high resolution asphalt pavement surface texture data. The exponential decay friction model is implemented in the simulation and the interface friction parameters required for the simulation are determined using the binary search back-calculation approach based on a trial process with the desired level of differences between simulated and observed skid numbers. To understand the influence of texture characteristics on interface friction parameters, the high-resolution 3D texture data is separated into macro- and micro-scales through Butterworth filtering and various areal texture indicators are calculated at both levels. Principal component analysis (PCA) regression analysis is conducted to quantify the relationship between various texture characteristics and the interface friction parameters. The results from this study can be used to better prepare the inputs of friction parameters for FEM simulation.
抗滑性能是影响道路安全的重要路面特性。已经开展了各种研究，通过数值模拟来理解路面与轮胎之间的相互作用，以预测抗滑性能。然而，模拟输入所需的摩擦参数通常是通过客观假设确定的。本文利用现场三维路面表面纹理和抗滑性能数据，开发了一种基于有限元法（FEM）的抗滑性能模拟框架。从高分辨率沥青路面表面纹理数据重建三维区域路面模型。在模拟中实施指数衰减摩擦模型，并基于模拟和观测的抗滑数值之间具有期望差异水平的试算过程，使用二分法反算方法确定模拟所需的界面摩擦参数。为了理解纹理特征对界面摩擦参数的影响，通过巴特沃斯滤波将高分辨率三维纹理数据分离为宏观和微观尺度，并在两个尺度上计算各种区域纹理指标。进行主成分分析（PCA）回归分析，以量化各种纹理特征与界面摩擦参数之间的关系。本研究结果可用于更好地准备有限元模拟的摩擦参数输入。
