Crack Propagation Simulation and Meshing Stiffness Analysis of Disposable Harmonic Gears

Zhang Yuxin; Pan Xudong; Li Yuefeng; Wang Guanglin; Zhang Qingyu

doi:10.16578/j.issn.1004.2539.2023.09.002

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Crack Propagation Simulation and Meshing Stiffness Analysis of Disposable Harmonic Gears

Theory·Research | 更新时间：2023-09-18

- Crack Propagation Simulation and Meshing Stiffness Analysis of Disposable Harmonic Gears
- Journal of Mechanical Transmission Vol. 47, Issue 9, Pages: 10-17(2023)
- 作者机构：
  
  哈尔滨工业大学机电工程学院，黑龙江哈尔滨 150001
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2023.09.002
  CLC：
- Published：15 September 2023，
  
  Received：10 July 2022，
  
  Revised：07 August 2022，
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张钰忻,潘旭东,李跃峰等.一次性谐波齿轮的裂纹扩展仿真与啮合刚度研究[J].机械传动,2023,47(09):10-17.

Zhang Yuxin,Pan Xudong,Li Yuefeng,et al.Crack Propagation Simulation and Meshing Stiffness Analysis of Disposable Harmonic Gears[J].Journal of Mechanical Transmission,2023,47(09):10-17.
张钰忻,潘旭东,李跃峰等.一次性谐波齿轮的裂纹扩展仿真与啮合刚度研究[J].机械传动,2023,47(09):10-17. DOI： 10.16578/j.issn.1004.2539.2023.09.002.

Zhang Yuxin,Pan Xudong,Li Yuefeng,et al.Crack Propagation Simulation and Meshing Stiffness Analysis of Disposable Harmonic Gears[J].Journal of Mechanical Transmission,2023,47(09):10-17. DOI： 10.16578/j.issn.1004.2539.2023.09.002.

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。

Abstract

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 performance of the disposable harmonic reducer. The change of the meshing stiffness can reflect the fault characteristics 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 disposable harmonic drive is analyzed. Besides

the damage model of the disposable harmonic flexible has been established 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.

关键词

一次性谐波齿轮裂纹扩展啮合刚度扩展有限元法

Keywords

Disposable harmonic gearCrack propagationMeshing stiffnessExtended finite element method

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