为了研究重载列车钩舌的运用可靠性,减少钩舌表面的裂纹,运用ANSYS软件对钩舌进行弹塑性分析,找出其薄弱环节;在此基础上以Hypermesh/Optistruct为拓扑优化平台对薄弱环节进行优化设计,将得到的优化结果与优化前相比较,表明优化后钩舌的应力分布明显改善,质量明显降低,为新型钩舌的研制开发提供参考。 In order to study the application reliability of the coupler knuckle of heavy haul train and reduce the crack on the knuckle surface, the hook-knuckle was analyzed by ANSYS software to find the weak links. On this basis, Hypermesh / Optistruct was chosen as topology optimization platform. The optimized design was compared with that before optimization, which showed that the optimized stress distribution of the knuckle improved obviously and the quality was obviously reduced, which provided a reference for the research and development of the new knuckle.