实心和空心滚子结构阻尼的动态分析  

Dynamic analysis of structural damping of solid roller and hollow roller

作　　者：李伟建[1] 潘存云[1] 王荣吉[1] 张湘[1] 

机构地区：[1]国防科学技术大学机电工程与自动化学院,长沙410073

出　　处：《振动与冲击》2009年第12期43-46,共4页Journal of Vibration and Shock

基　　金：湖南省自然科学基金(09JJ3180);中国博士后科学基金资助(20080441284)

摘　　要：结构阻尼是结构动力分析的重要参数之一,运用有限元方法研究实心和空心滚子在冲击载荷作用下的动态响应,并用傅里叶变换处理自由衰减中不同起点的两段相同长度的数据,求得滚子的结构阻尼,分析了滚子在不同冲击载荷、结构参数和材料机械性能参数下的阻尼特性。通过对滚子本身结构阻尼特性的研究,为轴承的振动研究提供了理论基础。Structural damping is one of the important parameters in the structure dynamic analysis.The dynamic responses of the solid roller and hollow roller under impact load were investigated by finite element method.Two data sets of the same length,starting from different time points on the free attenuation curve were processed by Fourier transform,and the structural damping of rollers was obtained.The damping properties were detailedly analyzed when the rollers were under different conditions of impact loads,structure parameters and material parameters.The research provides a theoretical foundation for the vibration analysis of bearings.

关 键 词：球轴承 非线性 泰勒展开式 摄动法 解析解 

分 类 号：O327[理学—一般力学与力学基础] TB123[理学—力学]