摘要
在结构动力学特性仿真分析中,精确的有限元模态模型至关重要。作为行星齿轮传动的关键部件,内齿圈的振动特性直接影响到整个系统的安全和传递效率。利用SolidWorks软件建立内齿圈参数化模型,采用循环对称模型及全六面体网格进行有限元自由模态分析,在尽量小的计算规模下获得尽可能精确的仿真模型,并与无预紧力自由试验模态对比,结果表明低阶固有频率的最大相对误差仅为3.02%,振型基本吻合,验证了仿真模型的准确性,为后续齿圈柔性分析及工作过程中的故障诊断提供理论参考。
Precise finite element model was critical to the analysis of structure dynamics performances. As one of the important parts of planetary gear transmission,the vibration characteristics of ring gear directly affect the safety and transmission efficiency of the whole system. The parametric model of ring gear was established by Solidworks. To ensure the finite element model as exactly as possible in a certain calculation scale,cyclic-symmetry and hexahedral mesh were presented. By comparing the results between finite element analysis and experimental modal,the maximum relative error of lower natural frequencies was only 3.02% and the precise of finite element model was verified to provide reference for furthermore analysis of structure flexibility and fault diagnosis.
作者
林祖胜
张绍辉
LIN Zu-sheng;ZHANG Shao-hui(School of Mechanical and Automotive Engineering,Xiamen University of Technology,Fujian Xiamen361024,China;Fujian Collaborative Innovation Center for R&D of Coach and Special Vehicle,Fujian Xiamen361024,China)
出处
《机械设计与制造》
北大核心
2020年第5期198-201,205,共5页
Machinery Design & Manufacture
基金
国家自然科学基金(51605406)
福建省自然科学基金(2018J01531)
福建省中青年教师教育科研项目(JAT170413)。
关键词
行星齿轮
齿圈
模态分析
振动特性
Planetary Gear
Ring Gear
Modal Analysis
Vibration Characteristics
