基于Kriging模型和MOGA的轮胎成型机辊压支架的轻量化研究  

Structural optimization and lightweighting of tyre forming machine rolling support

作　　者：凌静秀 李浩宇 王乾廷 张浩 LING Jingxiu;LI Haoyu;WANG Qianting;ZHANG Hao(School of Mechanical and Automotive Engineering,Fujian University of Technology,Fuzhou 350118,China;CSCEC Strait Construction and Development Limited Company,Fuzhou 350000,China;School of Material Science and Engineering,Fujian University of Technology,Fuzhou 350118,China)

机构地区：[1]福建工程学院机械与汽车工程学院,福州350118 [2]中建海峡建设发展有限公司,福州350000 [3]福建工程学院材料科学与工程学院,福州350118

出　　处：《现代制造工程》2023年第10期126-134,共9页Modern Manufacturing Engineering

基　　金：福建省自然科学基金项目(2020J01871);福建省科技厅STS项目(2021T3001)。

摘　　要：以轮胎成型机辊压支架为研究对象,提出一种结合Kriging模型和多目标遗传算法(Multi Objective Genetic Algorithm,MOGA)的轻量化优化方法。首先对辊压支架进行静态特性分析,对比稀疏网格模型和Kriging模型的计算精度及收敛情况,得出Kriging模型的收敛效果更好;以辊压支架质量为优化目标,以应力和变形为约束条件建立优化数学模型,运用最优空间填充(Optimal Space Filling,OSF)设计抽样方法获得初始样本点,使用Kriging模型建立响应面;最后使用MOGA搜索全局最优解,分析应力、变形和质量的优化过程。与原模型相比,优化后的辊压支架质量减轻了4.96%,该方法可为轮胎成型机其他零/部件轻量化优化设计提供参考。A lightweight optimization method combing the Kriging model and MOGA algorithm was proposed for the rolling stent which is used on the type forming machine.Firstly,the static characteristics of the rolling stent was obtained.Comparing with the computational accuracy and convergence of the sparse grid model and Kriging model,it was concluded that the convergence of the Kriging model was higher.The mass of the rolling stent was set as the optimization target,the stress and deformation were taken as the constrain conditions to bulid the optimation mathematical model.The initial sample points were obtained by the Optimal Space Filling(OSF) design sampling method,and the response surface was established by the Kriging model.Finally,the Multi Objective Genetic Algorithm(MOGA) was used to search the global optimal solution.The optimal conditions of the stress,deformation and mass were analyized.The weight of the optimal model was reduces by 4.96 %,which can provided a reference optimization design method for the lightweight design of other parts of the tyre forming machine.

关 键 词：辊压支架 轻量化 响应面优化 KRIGING模型 多目标遗传算法 

分 类 号：TH16[机械工程—机械制造及自动化]