基于 Ａｌｔａｉｒ- ＯｐｔｉＳｔｒｕｃｔ标准型动车机箱 结构拓扑优化设计

利用 Ｈｙｐｅｒｗｏｒｋｓ软件对标准型动车机箱结构进行了有限元分析，通过分析充电机机箱多种承 载工况，确定各工况的最优权重系数，进行了结构的综合目标设计优化，最终得出蒙皮加强筋的最佳布局型 式，其一阶模态频率提高了５６．１８％。同时为了保证机箱静动态承载性能的前提下对机箱部件进行拓扑优 化，部件质量减重２．１０ｋｇ。本文对机车充电机机箱结构的优化研究具有一定的工程意义和参考价值。

Topology Optimization Design of Standard EMU Train Chassis Structure Based on Altair-OptiStruct

The finite element analysis of the structure of standard EMU train chassis was carried out by using Hyperworks software.By analyzing various load-bearing conditions of the charger chassis,the optimal weight coefficient of each working condition is determined and the comprehensive target design optimization of the structure is carried out.Finally,the optimal layout form of the skin reinforcement is obtained and the first-order modal frequency is increased by 56.18%.Meanwhile,in order to ensure the static and dynamic load-carrying performance of the chassis,the topology of the chassis components is optimized and the weight of the components is reduced by 2.10 kg and It finds that the quality of the components is alleviated.The research in this paper has certain engineering significance and reference value for the optimization of the structure of the charger chassis and the improvement of its performance.