Dynamic modeling and analysis of gear system considering crack propagation and changing cantilever beam position

IF 4.9 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration Pub Date : 2025-09-28 DOI:10.1016/j.jsv.2025.119477

Lifeng Lin , Zijian Qiao , Siyuan Ning , Chongyang Xie

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引用次数: 0

Abstract

Gear crack fault changes the dynamic characteristics of gear, and accurate construction of time-varying meshing stiffness (TVMS) model is the key to failure analysis. Therefore, the TVMS model of spur cracked gear was improved based on the potential energy method, and a dynamic model was established to analyze the influence of crack depth on the dynamic characteristics of the system. Simulation and experimental results show that the acceleration response of the improved model at different crack depths and angles is in good agreement with the experimental results in the time domain and frequency domain. Further analysis of the time-frequency response of the crack propagation process shows that the impulse factor and kurtosis are extremely sensitive to the crack fault characteristics. The test bench data verification shows that the root crack defect will make the vibration acceleration response show periodic modulation characteristics, and the frequency domain analysis shows that there is a significant sideband modulation phenomenon near the meshing frequency and its harmonics. The simulation is consistent with the characteristics of the measured signal, which verifies the correctness of the method and provides a theoretical basis for the monitoring and diagnosis of gear tooth cracks.

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考虑裂纹扩展和悬臂梁位置变化的齿轮系统动力学建模与分析

齿轮裂纹故障改变了齿轮的动态特性，准确建立时变啮合刚度（TVMS）模型是进行故障分析的关键。因此，基于势能法对直齿裂纹齿轮的TVMS模型进行了改进，并建立了动态模型，分析了裂纹深度对系统动态特性的影响。仿真和实验结果表明，改进模型在不同裂纹深度和角度下的加速度响应在时域和频域上与实验结果吻合较好。进一步分析裂纹扩展过程的时频响应表明，脉冲因子和峰度对裂纹故障特征极为敏感。试验台数据验证表明，根裂纹缺陷会使振动加速度响应呈现周期性调制特征，频域分析表明，在啮合频率及其谐波附近存在明显的边带调制现象。仿真结果与实测信号的特征吻合，验证了该方法的正确性，为齿轮齿裂的监测与诊断提供了理论依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Sound and Vibration 工程技术-工程：机械

CiteScore

9.10

自引率

10.60%

发文量

551

审稿时长

69 days

期刊介绍： The Journal of Sound and Vibration (JSV) is an independent journal devoted to the prompt publication of original papers, both theoretical and experimental, that provide new information on any aspect of sound or vibration. There is an emphasis on fundamental work that has potential for practical application. JSV was founded and operates on the premise that the subject of sound and vibration requires a journal that publishes papers of a high technical standard across the various subdisciplines, thus facilitating awareness of techniques and discoveries in one area that may be applicable in others.