摘要
以深沟球轴承为研究对象,建立了一种对内圈轴心轨迹以及每个滚动体中心运动轨迹计算的轴承数学模型,结合声学理论,将轴承内圈看作圆柱声源,将滚动体看作球声源,建立了能够对深沟球轴承内圈和滚动体振动噪声进行定量计算的计算模型。通过一个具体的算例,研究了转速和径向载荷对固定点上噪声大小的影响,以及噪声沿滚动轴承轴线方向的变化规律,绘制了这些影响的变化曲线。发现随着轴承转速的增大,轴承声压值会随之增大;随着轴承所受径向载荷的增大,轴承声压值会随之增大,其变化趋势由快到慢;轴承内圈和滚动体运动所产生的声压在轴承轴线方向上逐渐减小,呈非线性关系变化。
Research of the noise of rolling bearing is an important research direction and it is also one of the future development directions of bearing research.However,in the research of rolling bearing noise,most of the current researches only focus on qualitative analysis and experimental analysis,while only few researches have been done for establishing a mathematical model to quantitatively calculate the rolling bearing noise.In this paper,through the mechanical analysis of deep groove ball bearing,a bearing mathematical model is established which can calculate the orbit of inner ring center and the trajectory of each roller’s center.Combining with the theory of acoustics and the wave equation,the deep groove ball bearing inner ring is regarded as a cylindrical sound source,and each rolling element is regarded as a spherical sound source.And through this theory,a calculation model for calculating the vibration and noise of deep groove ball bearing inner ring and rolling elements is established.Through a specific example,the influences of rotational speed and radial load on the bearing noise of fixed point and the change rule of the bearing noise along the axis direction of rolling bearing are studied,and the curves of these effects are plotted.With the increase of rotation speed,bearing sound pressure will also increase;with the increase of the bearing radial load,bearing sound pressure will also increase,and this bearing radial load change trend is fast at beginning and then becomes slow.In the axis direction of bearing,with the increase of distance,the total sound pressure of bearing inner ring and each rolling element gradually decreases,which shows a nonlinear process.
作者
张琦涛
安琦
ZHANG Qi-tao;AN Qi(School of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai 200237,China)
出处
《华东理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2018年第6期935-944,共10页
Journal of East China University of Science and Technology
基金
上海市设计学Ⅳ类高峰学科项目(DA17014)
关键词
深沟球轴承
内圈及滚动体
噪声模型
算例研究
deep groove ball bearing
inner ring and rolling element
noisy model
example analysis
