考虑水膜厚度影响的道面轮胎间动态摩擦模型

Water Film Thicknessbased Dynamic Pavementtire Friction Model

摘要:

针对考虑水膜影响的现有摩擦模型无法利用现场测试数据修正并应用于动态摩擦过程分析，提出了道面轮胎间动态摩擦模型.该模型以平均集总Lugre模型为基础，考虑了水膜厚度、飞机速度、胎压、道面表面构造幅度和滑移率等因素影响下通过实验和数值回归等手段获取参数，用于道面动态摩擦性能的评价预估.通过上海浦东国际机场的现场实测数据，修正模型物理意义明确，具有较高的预估精度，该模型利用现场实测数据获取参数，适用于实际道面安全管理.

Abstract:

A dynamic pavementtire friction model incorporated with water film thickness, aircraft velocity, tire pressure, pavement texture amplitude and slip ratio is proposed based on average lumped Lugre Friction Model. The friction models now available with a consideration of water film thickness could not be calibrated by the field measuring data and used for dynamic friction analysis. The parameters adopted by the proposed model could be obtained by laboratory tests, nonlinear regression and other methods. Based on the field measurement at Shanghai Pudong International Airport, the proposed model was calibrated. The results show that the calibrated model obtains high prediction accuracy, which can be used for dynamic friction analysis and convenient for runway safety management.