花纹结构对轮胎滑水性能影响分析及优化设计

轮胎滑水会降低车辆的附着能力，导致危险事故，胎面花纹的排水能力决定着轮胎滑水性能。以205/55 R16子午线轮胎为研究对象，建立能够反映花纹参数特征的流体域模型，采用响应面法对胎面花纹结构进行优化。选取4个主要花纹结构参数，以降低动水升力为优化目标构建响应面模型，得到复杂花纹结构最佳优化方案。对比优化前后轮胎在自由滚动、侧偏及侧倾工况下的流场特性，结果表明：优化后的花纹结构能够有效降低胎面动水压力，削弱沟槽内部及出口处水流旋涡，提高湿滑路面轮胎滑水性能，为轮胎结构设计提供借鉴。

Influence Analysis and Optimization Design of Pattern Structure Parameters on Tire Hydroplaning Performance

Tire hydroplaning will reduce the adhesion of the vehicle, leading to dangerous accidents. The drainage capacity of the tread pattern determines the hydroplaning performance of the tire. Taking 205/55 R16 radial tire as the research object, a fluid domain model that can reflect the characteristics of tread parameters was established, and response surface method was used to optimize the tread pattern structure. Four main structural parameters of the pattern were selected, and the response surface model was constructed with the optimization goal of reducing the hydrodynamic lift. The best optimization scheme of the complex pattern structure was obtained. The flow field characteristics before and after optimization were compared under free rolling, cornering and rolling conditions. The results show that the optimized tread pattern structure can effectively reduce the dynamic pressure of the tread, weaken the water vortex in the groove and at the outlet, improve the hydroplaning performance of the tires on wet roads, and provide reference for tire structure design.