基于有限元的1600mm辊锻机卸荷套结构优化  

Structure optimization of unloading sleeve for 1600 mm roll-forging machine based on finite elemen

作　　者：李海涛 杨勇 张艳朝 徐超 陈宪明 高远 张彬成 Li Haitao;Yang Yong;Zhang Yanzhao;Xu Chao;Chen Xianming;Gao Yuan;Zhang Bincheng(China Academy of Machinery Beijing Research Institute of Mechanical&Electrical Technology Co.,Ltd.,Beijing 100083,China)

机构地区：[1]中国机械总院集团北京机电研究所有限公司,北京100083

出　　处：《锻压技术》2024年第6期184-188,共5页Forging & Stamping Technology

摘　　要：以1600mm辊锻机卸荷套为研究对象,为满足初始静态刚度条件下的轻量化要求,提出以质量和总变形量为目标函数的多目标优化设计方法。将三维模型导入CAE软件中建立有限元模型,并进行静力学计算,得到最大等效应力为74.735MPa、最大变形量为0.16299mm。通过响应面优化选择参数并确定其数值区间,选用中心复合试验方法生成试验设计表,并根据试验点和标准响应面法建立设计变量与目标函数的响应面。使用多目标遗传算法对卸荷套的质量和最大变形量进行优化,并根据设计要求和实际经验,选择候选组Ⅲ为最优结果。结合灵敏度分析,对计算的优化结果进行修正,修正后的卸荷套的刚度提升了0.8%,最大等效应力减少了24%,卸荷套质量减少了8.6%,综合质量减少了27.8%,满足轻量化要求。For the unloading sleeve of 1600 mm roll-forging machine,in order to meet the lightweight requirements under the condi-tion of initial static stiffness,a multi-objective optimization design method taking mass and total deformation amount as objective functions was proposed.Then,the 3D model was imported into CAE software to establish the finite element model,and the static calculation was carried out to obtain the maximum equivalent stress of 74.735 MPa and the maximum deformation amount of 0.16299 mm.Furthermore,the parameters were selected by the response surface optimization to determine their value range,the test design table was generated through the central composite test method,and the response surface of design variables and objective functions according to the test points and the standard response surface method was established.Then the mass and maximum de-formation amount of unloading sleeve was optimized by using the multi-objective genetic algorithm.According to the design require-ments and practical experience,the candidate group II was selected as the optimization result.And the calculated optimization result was modified by combining the sensitivity analysis.After the modification of unloading sleeve,the stiffness is increased by O.8%,the maximum equivalent stress is reduced by 24%,the mass of unloading sleeve is reduced by 8.6%,and the comprehensive mass is reduced by 27.8%,meeting the requirements of lightweight.

关 键 词：卸荷套 多目标优化 静态分析 灵敏度分析 轻量化 

分 类 号：TH122[机械工程—机械设计及理论]