立式磨机减速器模态—振动联合优化分析  

Modal and Vibration Combined Optimization Analysis of Vertical Mill Reducer

作　　者：林胜[1] 陆颖荣[1] 

机构地区：[1]广西机电职业技术学院机械工程系,广西南宁530007

出　　处：《机械传动》2016年第11期127-130,171,共5页Journal of Mechanical Transmission

摘　　要：针对目前立式磨机传动系统模态优化和结构系统振动优化很难联合开展的现状,以立式磨机减速器齿轮箱结构系统尺寸参数和传动系统尺寸参数为设计变量,以减速器齿轮箱的固有频率避开系统特征频率和箱体振动最小为目标函数,箱体体积、箱体等效应力和综合位移为约束条件,以多目标优化理论为基础,将模态优化和振动优化进行加权处理,在ANSYS中构建了模态—振动联合优化有限元模型,采用先零阶后一阶的优化方法进行迭代求解。优化结果表明,优化后系统固有频率与特征频率的接近率为20.7%,同时振动水平减小了28.4%,联合优化的优化效果良好,研究工作可为多目标联合优化提供方法借鉴,同时对减振降噪实际工程应用也有重要的参考。Focusing on the difficulty and vibration from structure system, taking of the combination optimization of modal from transmission system the vertical mill reducer gearbox structural system geometrical parameter and transmission system parameter as design variables, to avoid the nature frequency and specific frequency overlapped and minimum the vibration of the reducer gearbox as the objective function, the volume, Von Mises stress and comprehensive displacement of the reducer gearbox as constraint condition, based on the multi - objective optimization theory, the weigh - adding of modal and vibration optimization is carried out. The modal -vibration combined optimization finite element model is built, the model is solved by using zero -order and first - order optimization methods. The optimization results indicate that the gap of nature frequency and specific frequency is reached at 20. 7%, and the vibration is attenuated by 28.4%, the effective results is found for the combined optimization, which can provide method for multi - objective optimization and significant reference for practical issues of vibration and noise reduction.

关 键 词：立式磨机减速器 模态 振动 联合优化 

分 类 号：TH132.46[机械工程—机械制造及自动化]