糊底机托辊机构摇臂优化设计
|
摘要
为实现纸纱复合袋糊底机托辊机构核心部件摇臂的轻量化设计,提高其力学性能,以摇臂质量、疲劳安全系数和等效应力为优化目标完成摇臂的多目标优化设计。建立摇臂参数化有限元模型,根据受载工况,完成静力分析和疲劳分析。引入灵敏度分析方法,根据分析结果确定优化设计变量,并采用目标驱动优化中的筛选法得到Pareto最优解集,确定最优解集中的1个Pareto最优解作为最终优化方案,并完成试制。结果表明:优化后摇臂质量降低19.28%,疲劳系数提高3.29%,等效应力降低3.15%,试制机构的力学性能得到了显著提升,满足现场要求。
The work aims to realize lightweight design of the rocker arm of the core part of roller mechanism of bottom-pasting machine for paper and yarn compounded bag,and improves its mechanical properties. With mass,fatigue safety factor and equivalent stress as the optimization goals,the multi-objective optimization design of the rocker arm is completed. The parametric finite element model of the rocker arm is established,and the static analysis and fatigue analysis are carried out according to the loading condition. Sensitivity analysis method is adopted to determine the optimization design variables. A set of Pareto optimal solution sets are obtained by using the screening method which belongs to the target driven optimization,one Pareto optimal solution is selected from the optimal solutions,and trial production is completed. The results show that the mass reduces by 19.28%,fatigue factor increases by 3.29%,equivalent stress reduces by 3.15%,the mechanical properties of the trial production mechanism improves significantly,and meet the needs of the site requirements.
The work aims to realize lightweight design of the rocker arm of the core part of roller mechanism of bottom-pasting machine for paper and yarn compounded bag,and improves its mechanical properties. With mass,fatigue safety factor and equivalent stress as the optimization goals,the multi-objective optimization design of the rocker arm is completed. The parametric finite element model of the rocker arm is established,and the static analysis and fatigue analysis are carried out according to the loading condition. Sensitivity analysis method is adopted to determine the optimization design variables. A set of Pareto optimal solution sets are obtained by using the screening method which belongs to the target driven optimization,one Pareto optimal solution is selected from the optimal solutions,and trial production is completed. The results show that the mass reduces by 19.28%,fatigue factor increases by 3.29%,equivalent stress reduces by 3.15%,the mechanical properties of the trial production mechanism improves significantly,and meet the needs of the site requirements.
引文
[1]刘永平,花志雄.环保型纸纱复合袋糊底生产线设计[J].包装工程,2012(33)23:71-74.(Liu Yong-ping,Hua Zhi-xiong.Design of environmental protection typepaper and yarn compounded bag bottom pasting line[J].Packaging Eng-ineering,2012,33(23):71-74.)
[2]Kim J H,Lee C M.Multi-stage optimum design of magazine type autom-atic tool changer arm[J].Central South University Press and Springer Ve-rlag Berlin Heidelberg,2012(19):174-178.
[3]王成军,陈孝喆,刘凯轨.轨轮式半自动双侧浇注机轻量化设计[J].铸造,2015(64)6:555-558.(Wang Cheng-jun,Cheng Xiao-zhe,Liu Kai-gui.Light-weight design ofthe semi-automatic rail-mounted double station casting machine[J].Fo-undry,2015,64(6):555-558.)
[4]廖宇兰,刘世豪,孙佑攀.基于灵敏度分析的木薯收获机机架结构优化设计[J].农业机械学报,2016,44(12):56-60.(Liao Yu-lan,Liu Shi-hao,Sun You-pan.Structural optimization forrack of cassava harvester based on sensitivity analysis[J].Journal of A-gricultural Machinery,2016,44(12):56-60.)
[5]于梦阁,张继业,张卫华.横风下高速列车流线型头型多目标气动优化设[J].机械工程学报,2014(50)24:122-129.(Yu Meng-ge,Zhang Ji-ye,Zhang Wei-hua.Multi-objective aerodynamicoptimization design of the streamlined head of high-speed trains undercrosswinds[J].Journal of Mechanical Engineering,2014,50(24):122-129.)
[6]孔振海,王良模,荣如松.基于HyperWorks的某轻型汽车前桥有限元分析及疲劳寿命预测[J].机械设计与制造,2013(2):97-100.(Kong Zhen-hai,Wang Liang-mo,Rong Ru-song.Finite element analysisand prediction on fatigue life of front axle of a light vehicle based on Hy-per Works[J].Machinery Design and Manufacture,2013(2):97-100.)
[7]刘源,刘雪峰,邓建松.基于模态分析的三维模型全局结构优化[J].计算机辅助设计与图形学报,2015(27)4:590-596.(Liu Yuan,Liu Xue-feng,Deng Jian-song.Global structural optimizationof 3D models based on modal analysis[J].Journal of Computer Aided De-sign and Computer Graphics,2015,27(4):590-596.)
[8]丛明,房波,周资亮.车-车拉数控机床拖板有限元分析及优化设计[J].中国机械工程,2008(19)2:208-213.(Cong Ming,Fang Bo,Zhou Zi-liang.Finite element analysis and optim-ization design of the carriage of turn broach NC machine tool[J].ChinaMechanical Engineering,2008,19(2):208-213.)
[9]申昊,蔡万宠,郁鼎文.两级阶梯形变幅杆设计及优化[J].振动与冲击,2015(34)20:104-108.(Shen Hao,Cai Wan-chong,Yu Ding-wen.Design and optimization of two-section ultrasonic stepped horn[J].Journal of Vibration and Shock,2015,34(20):104-108.)
[10]李鹏飞.斗轮堆取料机俯仰结构的有限元分析及优化设计[D].哈尔滨:哈尔滨工程大学,2013.(Li Peng-fei.Finite element analysis and optimal design for pitch stru-ctures of bucket wheel stacker-reclaimer[D].Harbin:Harbin Enginee-ring University,2013.)
[2]Kim J H,Lee C M.Multi-stage optimum design of magazine type autom-atic tool changer arm[J].Central South University Press and Springer Ve-rlag Berlin Heidelberg,2012(19):174-178.
[3]王成军,陈孝喆,刘凯轨.轨轮式半自动双侧浇注机轻量化设计[J].铸造,2015(64)6:555-558.(Wang Cheng-jun,Cheng Xiao-zhe,Liu Kai-gui.Light-weight design ofthe semi-automatic rail-mounted double station casting machine[J].Fo-undry,2015,64(6):555-558.)
[4]廖宇兰,刘世豪,孙佑攀.基于灵敏度分析的木薯收获机机架结构优化设计[J].农业机械学报,2016,44(12):56-60.(Liao Yu-lan,Liu Shi-hao,Sun You-pan.Structural optimization forrack of cassava harvester based on sensitivity analysis[J].Journal of A-gricultural Machinery,2016,44(12):56-60.)
[5]于梦阁,张继业,张卫华.横风下高速列车流线型头型多目标气动优化设[J].机械工程学报,2014(50)24:122-129.(Yu Meng-ge,Zhang Ji-ye,Zhang Wei-hua.Multi-objective aerodynamicoptimization design of the streamlined head of high-speed trains undercrosswinds[J].Journal of Mechanical Engineering,2014,50(24):122-129.)
[6]孔振海,王良模,荣如松.基于HyperWorks的某轻型汽车前桥有限元分析及疲劳寿命预测[J].机械设计与制造,2013(2):97-100.(Kong Zhen-hai,Wang Liang-mo,Rong Ru-song.Finite element analysisand prediction on fatigue life of front axle of a light vehicle based on Hy-per Works[J].Machinery Design and Manufacture,2013(2):97-100.)
[7]刘源,刘雪峰,邓建松.基于模态分析的三维模型全局结构优化[J].计算机辅助设计与图形学报,2015(27)4:590-596.(Liu Yuan,Liu Xue-feng,Deng Jian-song.Global structural optimizationof 3D models based on modal analysis[J].Journal of Computer Aided De-sign and Computer Graphics,2015,27(4):590-596.)
[8]丛明,房波,周资亮.车-车拉数控机床拖板有限元分析及优化设计[J].中国机械工程,2008(19)2:208-213.(Cong Ming,Fang Bo,Zhou Zi-liang.Finite element analysis and optim-ization design of the carriage of turn broach NC machine tool[J].ChinaMechanical Engineering,2008,19(2):208-213.)
[9]申昊,蔡万宠,郁鼎文.两级阶梯形变幅杆设计及优化[J].振动与冲击,2015(34)20:104-108.(Shen Hao,Cai Wan-chong,Yu Ding-wen.Design and optimization of two-section ultrasonic stepped horn[J].Journal of Vibration and Shock,2015,34(20):104-108.)
[10]李鹏飞.斗轮堆取料机俯仰结构的有限元分析及优化设计[D].哈尔滨:哈尔滨工程大学,2013.(Li Peng-fei.Finite element analysis and optimal design for pitch stru-ctures of bucket wheel stacker-reclaimer[D].Harbin:Harbin Enginee-ring University,2013.)