To solve the lightweight problem with high speed train wheels, the parametric optimized design model of trailer bogie wheel was established by the APDL language. The geometric shape of the wheel structure was optimized. The parametric optimized design and structural strength optimization of wheels were analyzed together. The results show as follows: For the optimized wheel, the web thickness decreases, the wheel mass reduces by 22. 89 kg and the structural strength meets the requirements of UIC51O-5; compared with the original wheels, the absolute values of the maximum radial stress and the minimum radial stress of the optimized wheel are increased whereas the axial stress exhibits no significant change; the absolute values of the maximum radial stress of and the minimum radial stress reach their peaks of 41. 1 Mpa and 69. 0 Mpa respectively under the situation of the train passing through a curve; the magnitudes of stresses and rates of material utilization in the web area are raised, thus bringing the mechanical properties of the manufacturing material of the wheel into full play. The optimizid design method is conducive to lightweight of the wheel structure.%针对高速列车车轮轻量化问题,采用APDL语言建立动车组拖车车轮的参数化优化设计模型,对车轮结构几何形状进行优化,进行车轮的参数化优化设计及结构强度优化归一分析.分析结果表明:优化后车轮的辐板厚度减薄,车轮质量减少22.89 kg,其结构强度满足UIC510—5标准的要求；与原始车轮相比,优化车轮径向应力最大和最小值的绝对值增大,轴向应力无明显变化,其中车轮在曲线通过工况下最大和最小径向应力绝对值的增量最大,分别为41.1 MPa和69.0 MPa；优化车轮辐板区域的应力有所增加,提高了辐板区域金属材料的利用率,更充分地发挥了车轮制造材料的机械性能,有利于车轮结构轻量化.
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