含间隙及摩擦的振动系统动力学分析

发布时间：2018-01-12 12:21

本文关键词：含间隙及摩擦的振动系统动力学分析　出处：《机械科学与技术》2017年09期 　论文类型：期刊论文

【摘要】：考虑接触表面工况的差异性,建立一类含两类摩擦及间隙的两自由度碰撞振动系统动力学模型,给出系统在不同运动阶段的判断条件和粘-滑-碰运动行为过渡准则,采用数值仿真方法对系统求解,结合判断条件分析摩擦对系统造成的非光滑运动特性及复杂的动力学行为,同时分析不同摩擦模型对系统动力学特性的影响。结果表明,系统存在瞬时摩擦诱导振动、周期颤振、颤振向粘着过渡及粘-滑-碰之间的转换等摩擦振动现象。
[Abstract]:Considering the difference of contact surface working conditions, a dynamic model of a two-degree-of-freedom impact vibration system with two kinds of friction and clearance is established. The judging conditions of the system in different motion stages and the transition criterion of visco-slide-collision motion behavior are given. The numerical simulation method is used to solve the system. The non-smooth motion characteristics and complex dynamic behaviors of the system caused by friction are analyzed in combination with the judgment conditions, and the effects of different friction models on the dynamic characteristics of the system are analyzed. There are some frictional vibration phenomena such as transient friction-induced vibration periodic flutter flutter to adhesion transition and the conversion between stick-slip and collision.
【作者单位】：兰州交通大学机电工程学院;
【基金】：国家自然科学基金项目(11302092)资助
【分类号】：TH113.1
【正文快照】： 含摩擦及间隙的碰撞振动机械系统普遍存在工程应用中,如制动尖叫、高速列车动力学分析、离合颤振、机器人关节处的摩擦诱导振动等方面。这类问题也一直是众多国内外学者致力于研究的课题。自1931年Hartog等[1]开始研究库伦粘滞阻尼振子以来,相继含有摩擦的系统成了研究的热点,

【相似文献】