基于摩擦学特性和轴倾斜的轴-轴承系统动力学问题探讨  

Exploring the Dynamics Behavior of Shaft-bearing Syetem with Journal Misalignment Caused by Shaft Deformation and Tribological Characteristics

作　　者：何芝仙[1] 桂长林[1] 李震[1] 孙军[1] 

机构地区：[1]合肥工业大学机械与汽车学院

出　　处：《机械科学与技术》2007年第10期1281-1285,共5页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(50175023)资助

摘　　要：以弹性轴的多柔体动力学理论为基础,通过ADAMS软件进行动力学仿真,解决了考虑轴承摩擦学特性和轴受载变形倾斜时弹性轴-轴承系统在正弦激励力作用下的动力学求解问题。得到的主要结论是:考虑轴倾斜时一阶固有频率略有下降,二阶固有频率略有上升;二阶共振时振动幅度增大;最小油膜厚度减小,最大油膜压力上升。传统的避开共振频率的设计方法仍然是减小最大倾斜角发生的有效方法。Based on the dynamics for multiple flexible bodies of an elastic shaft and its tribological characteristics, dynamic problem for the elastic shaft-bearing system with misaligned journal is solved on sine load. The exploration leads to the following conclusions： with journal misalignment considered, the first-order natural frequency decreases but the second-order natural frequency increases; the amplitude of vibration for the second-order resonance is augmented; the minimum thickness of oil film is diminished while its maximum pressure increases. The traditional design method that avoids resonant frequency is still an effective method for eliminating the existence of maximum angle of misalignment.

关 键 词：轴-轴承系统 轴倾斜 摩擦学 二阶共振 

分 类 号：TH133[机械工程—机械制造及自动化]