中文摘要：

以提高双S型轨道车轮的综合性能为目的，建立双S型轨道车轮模型，采用轨道车轮的热力耦合计算方法，讨论双S型轨道车轮辐板在热力耦合条件下的几种优化思路，通过正交实验的方法对双S型轨道车轮辐板的关键参数进行优化。研究结果表明：当S弯方向为正以及结合圆弧处于正中位置时，双S型辐板车轮具有较好安全性能；双S型轨道车轮的辐板厚度以及靠近轮辋处的圆弧半径对双S型轨道车轮性能的影响较大。该研究不仅适用于双S型轨道车轮的结构特性分析，同时还对其他辐板轨道车轮的优化设计具有重要的参考价值。

英文摘要：

In order to improve the comprehensive performance of the double S urban rail wheel, a double S rail wheel model was established. The method of thermal-mechanical coupling was introduced in this model. Consid-ering the thermal-mechanical coupling, several thoughts of double S rail wheel optimization model were analyzed. The key parameters of double S rail wheel plate were optimized by the method of orthogonal experiment. The re-sults show that the double S rail wheel has a good safety performance when S bending in the positive direction and circular arc in the center position. The plate thickness and the radius of circular arc near the rim have a greater influence on the performance of the double S rail wheel. The work is not only suitable for the structure analysis of double S rail wheel, but also has important reference value for the other rail wheel optimization design.