摘要
为减小变矩器总成质量,在保证安全系数的基础上针对某型号液力变矩器的涡轮毂开展基于拓扑优化的轻量化设计.通过三维造型软件提取全流道模型并进行不同工况下流场瞬态数值模拟,以叶轮转矩时均值作为涡轮毂的载荷,在起动工况和闭锁工况下对其强度进行校核.在获得应力分布的基础上,采用基于SIMP插值的变密度法对涡轮毂开展拓扑优化.综合两种工况下的拓扑优化结果,提出理想优化方案和考虑可制造性的轻量化设计方案,优化结果表明涡轮毂的重量得到有效降低.
We proposed a lightweight design of a turbine hub based on topology optimization to decrease the overall weight of a torque converter while guaranteeing safety factors.The full flow channel model was extracted by 3D modeling software,and the transient numerical simulation of the flow field under different working conditions was carried out.The average value of the impeller torque was taken as the load of the turbine hub,and its strength was checked under the starting condition and the locking condition.Based on obtaining the stress distribution,the topology optimization of the turbine hub was carried out using the variable density method based on SIMP interpolation.We proposed an ideal optimization scheme and a lightweight design scheme considering manufacturability based on the topology optimization results under the two working conditions.The optimization result shows that the weight of turbine hub can be effectively decreased.
作者
王嘉轩
刘城
WANG Jiaxuan;LIU Cheng(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;Chongqing Innovation center,Beijing Institute of Technology, Chongqing 401122, China)
出处
《车辆与动力技术》
2022年第2期18-24,共7页
Vehicle & Power Technology
关键词
液力变矩器
变密度法
涡轮毂
轻量化设计
拓扑优化
torque converter
variable-density method
turbine hub
lightweight design
topology optimization
作者简介
王嘉轩(1999-),男,硕士研究生.
