多工况下地铁车辆齿轮箱吊座拓扑优化设计  

Topological Optimization Design on Gearbox Hanger Structure for Metro under Multi-working Conditions

作　　者：张斌瑜[1] 赵洪伦[1] 田丹[1] 

机构地区：[1]铁道与城市轨道交通研究院同济大学,上海201804

出　　处：《机电产品开发与创新》2011年第4期4-6,共3页Development & Innovation of Machinery & Electrical Products

摘　　要：采用变密度法,以齿轮箱吊座多工况刚度最大化为目标函数,以体积比、一阶频率和工艺要求为约束条件,建立了吊座结构多工况拓扑优化模型。通过OptiStruct软件的优化,得到结构的拓扑优化结果,结合工艺要求对优化后的结构进行重新建模,分析了结构在三种工况下的应力分布和一阶频率。结果表明,吊座质量减轻了约7kg,结构一阶固有频率有所提高,最大等效应力与优化前相当,且整体应力分布更加均匀,实现了齿轮箱吊座的轻量化设计。By adopting the variable density method,the multi conditions topological optimization model that took the stiffness maximization of gearbox hanger as the target of optimization and the volume ratio、the first ordered frequency manufacturing process requirement of structure as the constraint was established and optimized by Optistruct.After the model of optimized gearbox hanger was rebuilt,the stress distribution and the first ordered frequency of the new gearbox hanger were analyzed.The results showed that the hanger was reduced by 7 kg,the first ordered frequency had been increased,the von mises was almost the same as that of the original one,and the stress distribution was more homogeneous,achieving the objective of lightweight design.

关 键 词：齿轮箱吊座 多工况 拓扑优化 变密度法 

分 类 号：TH122[机械工程—机械设计及理论] U270.2[机械工程—车辆工程]