齿轮箱箱体高精度模态识别方法研究及结构优化设计  

Research on High Precision Modal Identification Method and Structural Optimization Design of Gearboxes

作　　者：董怀玉 何立东[1] 贾兴运 侯启炀 Dong Huaiyu;He Lidong;Jia Xingyun;Hou Qiyang(Ministry of Chemical Safety Education Engineering Research Centre,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学化工安全教育部工程研究中心,北京100029

出　　处：《机械传动》2023年第9期31-36,共6页Journal of Mechanical Transmission

基　　金：北京自然科学基金项目(3224066);中国博士后科学基金项目(2020M670113);中央高校基金项目(ZY2105,JD2222)。

摘　　要：考虑到齿轮箱箱体结构的复杂性,使用单点激励-多点响应模态识别技术对其前6阶模态进行识别,模态置信度即模态识别精度高。以试验获得的齿轮箱箱体前6阶模态为指标,提出了兼顾计算精度和计算效率的模态有限元计算方法;使用拓扑优化方法对齿轮箱箱体结构进行优化设计,优化后齿轮箱箱体在不同固有频率处的变形均得到了减小。研究为齿轮箱箱体结构优化设计提供了新思路。Considering the complexity of the gearbox structure,the first six orders are identified by using the single-point excitation and multipoint response modal identification technology,and the modal confidence,namely,the modal identification accuracy is high.Based on the first six orders of the gearbox obtained from the test,a modal finite element calculation method considering both calculation accuracy and calculation efficiency is proposed.Subsequently,the topology optimization method is used to optimize the structure of the gearbox.Af⁃ter optimization,the deformation of the gearbox at different natural frequencies is reduced,which provides a new idea for the optimization design of the gearbox structure.

关 键 词：齿轮箱箱体 模态分析 结构优化设计 

分 类 号：TH132.41[机械工程—机械制造及自动化]