PCE超越离合器弹簧的磨损及疲劳寿命分析

发布时间：2018-03-02 14:47

  本文选题：PCE离合器　切入点：弹簧　出处：《机械设计》2017年08期 　论文类型：期刊论文

【摘要】：PCE超越离合器的弹簧运动、受载复杂,其寿命直接影响离合器的可靠性。文中采用动力学仿真方法对离合器接合及稳定传动阶段弹簧与楔块的相对速度进行了分析,基于Archard磨损模型计算获得了离合器接合瞬态与稳定传动两种状态下弹簧磨损断裂的时间。通过有限元方法分析了离合器接合状态下弹簧应力,采用Manson-Coffin模型对弹簧疲劳寿命进行了预测。研究结果表明:弹簧最大应力出现在弹簧与楔块侧槽接触处;弹簧疲劳裂纹产生寿命长于磨损断裂寿命,即弹簧的寿命取决于磨损。文中研究可为PCE离合器中弹簧的设计提供依据。
[Abstract]:The spring movement of PCE overrunning clutch is complicated, and its life directly affects the reliability of clutch. In this paper, the relative velocity of spring and wedge in clutch joint and steady transmission stage is analyzed by dynamic simulation method. Based on the Archard wear model, the time of the spring wear fracture in the clutch joint transient state and the stable transmission state is obtained. The spring stress in the clutch joint state is analyzed by the finite element method. The Manson-Coffin model is used to predict the fatigue life of the spring. The results show that the maximum stress of the spring occurs at the contact point between the spring and the side slot of the wedge, and the fatigue crack life of the spring is longer than that of the wear fracture. That is, the life of the spring depends on the wear. The research in this paper can provide the basis for the design of the spring in the PCE clutch.
【作者单位】： 中南大学高性能复杂制造国家重点实验室;中南大学机电工程学院;
【基金】：2015年湖南省重点科技计划资助项目(2015JC3007) 国家重点基础研究发展规划(“973”计划)资助项目(2011CB706800)
【分类号】：TH133.4
，

本文编号：1556960