有轨电车轻型防爬器结构优化设计

摘要

Taking the light rail anti-creeper as the research object and based on topology optimization theory, the combination of topology optimization and structural refinement design is adopted for the structural design of the anti-creeper. In the optimum design of anti-creeping gear, the Optistruct module of Hyperworks software is used, the permissible stress and the first order mode of the anti-creeper mechanism are considered as the optimal constraint conditions. On the basis of the conceptual structure and in accordance with the requirements of structural stiffness, strength and design technology, the fine design of anti-creeping gear is completed, which has been verified by static analysis, modal analysis and performance test.The results show that, on the basis of satisfying the allowable stress and the first order mode, the weight of optimized anticreeping gear is reduced by 30. 24％ compared with the original design, so the purpose of lightweight structure is achieved.%以有轨电车防爬器为研究对象,基于拓扑优化理论,采用拓扑优化和结构精细化设计相结合的方法进行防爬器的结构设计.利用Hyperworks软件的Optistruct模块,以防爬齿结构的屈服应力和一阶模态为优化约束条件,进行防爬齿布局优化设计.在概念结构的基础上,结合结构刚度、强度和设计工艺等要求,对防爬齿进行了精细化设计,并通过静力分析、模态分析和性能试验进行验证.结果表明:在满足许用应力和一阶模态的基础上,优化设计的防爬齿的质量较常规设计减轻了10.24％,实现了结构轻量化的目的.