摘要
将航空航天等领域中使用过一次后不再重复利用的机械设备称为一次性机械。柔轮的失效是影响一次性谐波减速器性能的最主要因素,而啮合刚度的变化又可以反映谐波传动的故障特征。以一次性谐波齿轮为研究对象,从应用环境和结构区分一次性谐波齿轮与常规谐波齿轮,分析了一次性谐波传动中柔轮的裂纹萌生位置;基于扩展有限元法,建立了一次性谐波齿轮传动的损伤模型,观察了柔轮裂纹的扩展路径,并据此建立了一次性谐波齿轮传动的裂纹刚度模型;最后,分析了裂纹对一次性谐波传动啮合刚度的影响。研究结论可为一次性谐波齿轮的故障诊断和寿命预测提供理论支撑。
The mechanical equipment in aerospace field that will not be reused after being used once is called disposable machinery.The failure of the flexible wheel is the most important factor affecting the perfor⁃mance of the disposable harmonic reducer.The change of the meshing stiffness can reflect the fault characteris⁃tics of the harmonic drive.In this study,the disposable and conventional harmonic gears are distinguished from the application environment and structure.Then,the crack initiation position of the flexible wheel in the dispos⁃able harmonic drive is analyzed.Besides,the damage model of the disposable harmonic flexible has been estab⁃lished based on the extended finite element method,and the crack propagation path of the flexible wheel rim is observed.Finally,the effect of cracks on the meshing stiffness of the disposable harmonic drive is discussed.The research conclusions of this study can provide theoretical support for fault diagnosis and life prediction of disposable harmonic gears.
作者
张钰忻
潘旭东
李跃峰
王广林
张庆豫
Zhang Yuxin;Pan Xudong;Li Yuefeng;Wang Guanglin;Zhang Qingyu(School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,China)
出处
《机械传动》
北大核心
2023年第9期10-17,共8页
Journal of Mechanical Transmission
基金
国家自然科学基金项目(51875117)
黑龙江省自然科学基金中央高校基本科研业务费专项资金(LH2020E035)。
关键词
一次性谐波齿轮
裂纹扩展
啮合刚度
扩展有限元法
Disposable harmonic gear
Crack propagation
Meshing stiffness
Extended finite element method
