[1]夏伯乾,徐梦霞.线接触弹流状态下摩擦副的刚度阻尼研究[J].郑州大学学报(工学版),2019,40(06):68-72.
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线接触弹流状态下摩擦副的刚度阻尼研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
40
期数:
2019年06期
页码:
68-72
栏目:
出版日期:
2019-11-16

文章信息/Info

Title:
Dynamic Behaviours of Line Contact Tribopairs under Transient Elastohydrodynamic Lubrication
作者:
夏伯乾;徐梦霞
Keywords:
mill transmission system substructure modal test response surface method model updating
文献标志码:
A
摘要:
针对滚子轴承,齿轮,凸轮等线接触摩擦副,建立线接触非稳态弹流润滑数学模型,利用复合直接迭代法求解了接触体在自由振动过程中刚体中心膜厚的变化,并根据刚体中心膜厚的变化研究不同质量下确定的无量纲自然频率,不同初始扰动方式和不同激振频率对摩擦副等效刚度和阻尼的影响.结果表明:在接触体振动过程中刚体中心膜厚始终在平衡位置附近上下波动,且随着质量的增大,接触体的振动周期逐渐变大,振动幅值逐渐减小;根据不同质量确定的无量纲自然频率对摩擦副刚度和阻尼的影响不大;摩擦副刚度和阻尼与初始扰动方式无关,与激振频率无关.
Abstract:
The transient elastohydrodynamic lubrication model of linecontact among roller bearing, gear, cam and other tribopairs are developed. The variations of thickness of the contact solid’s center film under free vibrations of the contact solid are solved based on the compound direct iterative method. According to the variation of the thickness of the contact solid’s center film, the influence of the dimensionless natural frequencies determined under different mass, the different initial disturbance modes and the different excitation frequencies on the equivalent stiffness and damping of the tribopairs are studied. The results demonstrate that the thickness of the contact solid’s center film fluctuates in the vicinity of the equilibrium position, and with the increase of mass, the vibration period of the contact solid increases and the vibration amplitude decreases.The dimensionless natural frequency determined under different mass has little effect on the stiffness and damping of the tribopairs. The stiffness and damping of the tribopairs are independent of the initial disturbance mode and have nothing to do with the excitation frequency.
更新日期/Last Update: 2019-11-25