不同接触摩擦条件下超越弹簧离合器接合特性分析  

Analysis of the Engaging Characteristics of High Power and Speed Overrunning Spring Clutch under Different Friction Condition

作　　者：严宏志[1,2] 夏凡[1,2] 龙尚斌[1,2] 谭武中[1,2] 

机构地区：[1]中南大学高性能复杂制造国家重点实验室,长沙410012 [2]中南大学机电工程学院,长沙410012

出　　处：《机械科学与技术》2014年第8期1192-1196,共5页Mechanical Science and Technology for Aerospace Engineering

基　　金：教育部博士点基金项目(20120162110004)资助

摘　　要：运用有限元和动力学分析方法分析了新开发的大功率高速弹簧离合器在不同摩擦系数下的接合动态特性;在Abaqus平台上建立了由弹簧和输入输出壳体组成的弹簧离合器三维有限元模型,分析得到了不同摩擦系数下离合器的响应时间、接合时间、弹簧内外圈的Mises应力、径向位移。结果表明,设计的变截面弹簧离合器响应速度快,弹簧稳态接合后的Mises应力分布较均匀,且弹簧中部圈还未完全与壳体内壁接触,离合器承载能力还有一定裕度。此外,弹簧与壳体间摩擦系数对离合器接合时间、响应时间影响不大,对弹簧Mises应力有影响,对弹簧的径向位移影响明显。Both the finite element method and the dynamics method are conducted to investigate the engaging characteristics of new developed high power and high speed spring clutch in different friction condition.The three- Mises stress and radial displacement of spring are obtained. The results illustrate the response of the clutch is quick, the steady state Mises stress of the spring is well-distributed and the radial displacement of the spring is not completely contacted with housing. The loading of the clutch still has some allowance. The engaging and response time of the clutch is not influenced too much by the friction coefficient.The friction coefficient influences the Mises stress of the spring and radial displacement of the spring.

关 键 词：动力学 应力 有限元 摩擦 

分 类 号：TH133.4[机械工程—机械制造及自动化]