考虑啮入冲击作用下减速器的振动噪声分析

本资料包含pdf文件1个，下载需要1积分

A dynamic model of a cylindrical gear reducer was developed in consideration of time-varying mesh stiffness,gear errors and meshing impact in gear meshing process.Dynamic load of bearings was taken as an excitation.Noise radiation of the gear reducer was calculated by using FEM/BEM,and then the noise spectrum of the gearbox was obtained.The effect of meshing impact on the noise of the gearbox was analyzed and the factors affecting the noise of the gearbox were presented.The effect of gear error and operating load on vibration and noise radiation were studied,and the rule of noise radiation versus gear error and operating load was obtained.The results provided a useful theoretical guideline for design of gearboxes.以单级圆柱齿轮减速器为研究对象,综合考虑齿轮啮合过程中轮齿时变啮合刚度、误差及啮入冲击的影响,建立了传动系统动力学模型。以轴承动载荷为激励,采用FEM/BEM方法计算了减速器振动辐射噪声,得到齿轮箱声场场点的噪声谱,分析了啮入冲击对减速器振动噪声的影响;阐述了箱体辐射噪声的影响因素,对多工况下齿轮箱振动噪声辐射进行了计算,得到了噪声辐射随齿形误差及负载的变化规律,为减速器的减振降噪设计提供了理论依据。