微耕机操纵装置动态特性分析及结构拓扑优化  

Dynamic characteristics analysis and topology optimization of tiller manipulator

作　　者：许洪斌[1] 陈亚洁[2] 刘妤[2] 卢腊 

机构地区：[1]汽车零部件先进制造技术教育部重点实验室,重庆400054 [2]重庆理工大学机械工程学院,重庆400054

出　　处：《机械设计》2017年第4期80-85,共6页Journal of Machine Design

基　　金：国家自然科学基金资助项目(51405051);重庆市科委基础与前沿研究重点资助项目(cstc2015jcyj BX0114);重庆理工大学研究生创新基金资助项目(YCX2015207)

摘　　要：微耕机作业时的剧烈振动,不仅影响操作员的操控舒适性及身体健康,而且会缩短微耕机及零部件的使用寿命。文中分析了微耕机操纵装置固有特性及怠速状态下的频响特性,并在此基础上完成了操纵装置的结构拓扑优化。优化结果表明:微耕机操纵装置1阶频率提高至81.77 Hz,避开了人体反应特别敏感的频率范围;4阶频率提高至177.54 Hz,避开了微耕机耕作时的主要工作频率。为微耕机振动特性的改善奠定了基础。The violent vibration of the power tiller, not only causes comfort of operation and health problem, but also will shorten the service life of the tiller and parts. In this paper, based on dynamic characteristics analysis and vibration response testing of the power tiller in non-operational state, topology optimization of the tiller manipulator is completed. The results indicate that the first order frequency is increased to 81.77 Hz, which avoid the human body reaction particularly sensitive frequency range. At the same time, the fourth order frequency is increased to 177.54 Hz, which avoid the main operating frequency of the power tiller in work. All of these lay the foundation for improving the vibration characteristics of the power tiller.

关 键 词：微耕机操纵装置 固有特性 振动响应特性 结构拓扑优化 

分 类 号：TH122[机械工程—机械设计及理论]