齿形结合面法向接触阻尼理论分析与实验研究  

Theoretical Analysis and Experiment Study of Normal ContactDamping of Serrated Contact Surfaces

作　　者：孙屹博[1] 胡贺贺 余俊男 赵广[2] SUN Yibo;HU Hehe;YU Junnan;ZHAO Guang(School of Locomotive&Rolling Stock Engineering,Dalian Jiaotong University,Dalian 116000,China;School of Energy and Power Engineering,Dalian University of Technology,Dalian 116000,China)

机构地区：[1]大连交通大学机车车辆工程学院,辽宁大连116000 [2]大连理工大学能源与动力学院,辽宁大连116000

出　　处：《大连交通大学学报》2020年第2期44-48,55,共6页Journal of Dalian Jiaotong University

基　　金：辽宁省教育厅基本科研项目中国博士后科学基金面上资助项目(2019M651103);辽宁省‘兴辽英才计划’基金资助项目(XLYC1807112);辽宁省教育厅科学研究计划资助项目(JDL2017015)。

摘　　要：针对装载齿形防松垫圈的螺栓联接结构对接触阻尼展开研究,以接触分形理论为基础,将齿面与平面的接触进行等效简化,建立了结合面法向接触阻尼及损耗因子分形模型,分析了法向载荷和接触面积对接触阻尼的定性影响,建立了装有齿形防松垫圈的螺栓联接悬臂梁结构实验台,开展了阻尼比检测实验.理论分析和实验结果均表明齿形结合面的接触阻尼随着法向载荷的增大而减小、随着接触面积的增大而减小.Based on contact fractal theory,the contact between the tooth surface and the plane is simplified,and a normalized contact damping and loss factor fractal model for serrated surfaces is established.The qualitative influence of normal load and contact area on contact damping is analyzed.A bolt-connected cantilever beam structure test bench equipped with a toothed lock washer is established,and the damping ratio test is carried out.Both theoretical analysis and experiment results indicate that the contact damping of the serrated joint is decreased with the increase of the normal load and contact area.

关 键 词：齿形结合面 接触阻尼 分形理论 悬臂梁 

分 类 号：TH131.3[机械工程—机械制造及自动化]