冲击载荷作用下计入轴倾斜的轴-轴承系统动力学摩擦学行为研究  

Dynamic and Tribological Behaviors of Flexible Shaft-Bearing System Under Shock Loads Considering Misalignment Caused by Shaft Deformation

作　　者：何芝仙[1] 桂长林[2] 李震[1] 孙军[2] 

机构地区：[1]安徽工程科技学院机械系,安徽芜湖241000 [2]合肥工业大学机械与汽车学院,合肥230009

出　　处：《轴承》2007年第3期17-21,共5页Bearing

基　　金：国家自然科学基金研究项目(50175023)

摘　　要：以多柔体动力学分析为基础,通过ADAMS与Matlab联合仿真,研究在冲击激励力作用下计入轴受载变形倾斜时弹性轴-轴承系统的动力学和摩擦学行为。得到的主要结论是:间隙较大时,轴-轴承系统发生自激振动;计入轴受载变形倾斜,轴承的最大油膜压力大幅度上升,最小油膜厚度大幅度下降。On the basis of analysis of dynamics for multi - flexible bodies, the dynamic and tribologlcal behaviors of the flexible shaft - bearing system under a shock load are studied with the combining simulation of ADAMS and Maflab, considering shaft misalignment caused by elastic deflection of shaft. Numerical results show that self-exited vibration of the system happens ff the radial clearance of beating is larger. The minimum thickness of oil film for the bearings decreases to a great extent, and the maximum pressure of off film increases greatly as well when journal misalignment is considered.

关 键 词：滑动轴承 轴-轴承系统 动力学 摩擦学 冲击载荷 轴倾斜 

分 类 号：TH133.31[机械工程—机械制造及自动化] O313[理学—一般力学与力学基础]