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    孙敏杰, 安琦. 考虑三维波纹度影响的深沟球轴承振动噪声计算方法研究[J]. 华东理工大学学报(自然科学版), 2021, 47(4): 494-503. DOI: 10.14135/j.cnki.1006-3080.20200411005
    引用本文: 孙敏杰, 安琦. 考虑三维波纹度影响的深沟球轴承振动噪声计算方法研究[J]. 华东理工大学学报(自然科学版), 2021, 47(4): 494-503. DOI: 10.14135/j.cnki.1006-3080.20200411005
    SUN Minjie, AN Qi. Calculation Method of Radiation Noise for Deep Groove Ball Bearing with Considering 3D Waviness of Raceways[J]. Journal of East China University of Science and Technology, 2021, 47(4): 494-503. DOI: 10.14135/j.cnki.1006-3080.20200411005
    Citation: SUN Minjie, AN Qi. Calculation Method of Radiation Noise for Deep Groove Ball Bearing with Considering 3D Waviness of Raceways[J]. Journal of East China University of Science and Technology, 2021, 47(4): 494-503. DOI: 10.14135/j.cnki.1006-3080.20200411005

    考虑三维波纹度影响的深沟球轴承振动噪声计算方法研究

    Calculation Method of Radiation Noise for Deep Groove Ball Bearing with Considering 3D Waviness of Raceways

    • 摘要: 波纹度误差是影响滚动轴承振动和噪声性能的重要因素。以深沟球轴承为研究对象,通过自相关函数构建了轴承内外圈滚道三维波纹度模型,通过力学分析建立了内圈轴心及滚动体中心的运行轨迹的计算方法,并采用相应的声学模型,运用声源复合的方法对轴承的噪声进行定量计算。通过具体算例,研究了内圈和滚动体的声辐射特性,发现轴承的噪声辐射在空间中具有一定的指向性;研究了内圈和滚动体的声压频谱特性,发现其峰值与滚动体通过内外圈的频率及倍频有关;研究了不同波纹度误差对轴承各组分声压信号的影响,发现声压信号的峰值和均方根值均随着波纹度误差的增加而近似线性增大。

       

      Abstract: Waviness of rolling bearing has great influence on the vibration and acoustic performances of bearings. This paper takes the deep groove ball bearing as the research subject. With the autocorrelation function, 3D random surface waviness is simulated. Through mechanical analysis, the calculation method for trajectory of inner ring and the center of each ball is established. Combined with the theory of acoustics, the noise generated by bearing can be calculated quantitatively. Through a specific example, the acoustic characteristics of inner ring and balls are studied. The research shows that noise generated by bearing varies in terms of different directions. The study of sound pressure signal and frequency spectrum shows that peaks of the sound pressure spectrum close to the frequency of ball passing frequency of inner ring and outer ring. The influences of different waviness amplitude on each noise source of bearing are studied. The result shows that the peak-to-peak and RMS values of sound pressure signal increase with the waviness amplitude.

       

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