基于胎路耦合滑水机理的雨天路面附着系数解析OA

Under rainy conditions,the presence of water flow significantly diminishes the adhesion coefficient between tire and pavement,thereby impacting road traffic safety.To investigate the influencing factors of tire-road adhesion coefficient in rainy conditions,a three-dimensional tire hydroplaning model was constructed using finite element software based on the coupled Euler-Lagrangian method.The influencing factors of tire-road adhesion coefficient and the adhesion characteristics in wet conditions were analyzed.Results indi-cate that the coefficient of adhesion decreases with increasing tire speed and increases with increasing tire infla-tion pressure.Under rainy conditions,when the water film thickness is relatively small,the coefficient of ad-hesion exhibits a notable decline as the water film thickness increases.As the water film thickness continues to increase,the decreasing rate of the coefficient of adhesion gradually decreases;the factors influencing the tire-road adhesion coefficient in descending order of significance are water film thickness,tire velocity,and tire inflation pressure;compared with dry conditions,the peak longitudinal adhesion force in wet conditions decreases and occurs earlier.This research reveals the variation patterns of tire-road adhesion coefficient in rainy conditions,providing guidance for improving pavement skid resistance and driving safety.