应用响应面法的电机支架多目标优化设计  

Multi-Objective Optimization Design of Motor Bracket Using Response Surface Method

作　　者：王宇钢[1] 修世超[2] WANG Yu-gang;XIU Shi-chao(School of Mechanical Engineering and Automation,Liaoning University of Technology,Liaoning Jinzhou 121001,China;School of Mechanical Engineering and Automation,Northeastern University,Liaoning Shenyang 110819,China)

机构地区：[1]辽宁工业大学机械工程与自动化学院,辽宁锦州121000 [2]东北大学机械工程与自动化学院,辽宁沈阳110819

出　　处：《机械设计与制造》2021年第10期42-44,共3页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目(51775101);辽宁省自然科学基金资助项目(20170540445)。

摘　　要：针对汽车电机支架在增大载荷力条件下的结构优化问题,利用响应面法和多目标优化算法相结合,对电机支架进行有限元分析和多目标结构优化设计。以应力值和支架质量为优化目标,通过表面中心复合实验设计和响应面方法构建响应面模型,并在此基础上应用Hammersley筛选法对其进行多目标优化求解。优化结果表明在载荷力增大8.3%的情况下,优化后电机支架的最大应力降低9.7%,质量降低3%,满足预期结构优化目标。Aiming at the structural optimization of motor bracket under the condition of increasing load,the response surface method and multi-objective optimization algorithm were combined to analyze finite element model and optimize the structural of motor bracket.Taking stress value and quality as optimization objectives,response surface model was constructed by surface center composite experimental design and response surface methodology,and on this basis,Hammersley screening method was applied to solve the multi-objective optimization problem.The optimization results show that the maximum stress of the motor bracket is reduced by 9.7%and the mass is reduced by 3%when the load force is increased by 8.3%,which meets the anticipated structural optimization goal.

关 键 词：响应面 结构优化 多目标优化 有限元分析 

分 类 号：TH16[机械工程—机械制造及自动化] TG580[金属学及工艺—金属切削加工及机床]