螺纹联接件的微动损伤研究  

FRETTING DAMAGE RESEARCH ON BOLTED JOINTS

作　　者：陶峰[1] 张险峰[2] 欧阳祖行[1] 

机构地区：[1]南京航空航天大学机电学院,南京210016 [2]华东冶金学院机械系,马鞍山243002

出　　处：《机械强度》2000年第2期134-136,共3页Journal of Mechanical Strength

基　　金：江苏省应用科学基金资助项目! (BJ970 2 5)

摘　　要：从试验和数值分析两个方面研究了螺栓预紧力矩对LY12CZ铝合金双盖板对接螺纹联接件微动损伤的影响。在高频疲劳试验机上进行了微动试验 ,对接触表面间的微动损伤状况进行了观察分析。此外 ,在考虑摩擦力的情况下 ,用边界元法对联接板接触面间的位移场和应力场进行了计算 ,并用微动摩擦功来衡量接触面上微动损伤的严重程度 ,所得的结果表明 ,螺栓预紧力矩值的大小对螺纹联接件的微动损伤有较大的影响 ,在某一力矩下其微动损伤程度较轻。This article studies the influence of the bolt tightening torque on the fretting damage of LY12CZ aluminium alloy double shear lap bolted joint by experimental and conumerical analysis. Fretting test are conducted on a high frequency fatigue test machine and the fretting damage on the contact surfaces is observed and then discussed. Moreover, boundary element method of frictional contact is introduced to calculate the relative displacement and stress field of the interface of the joint plates. The concept of fretting friction work is applied to quantify the effects of fretting damage on the contact surfaces. The obtained results show that the volume of bolt tightening torque has prominent influence on fretting damage degree for bolted joint and the damage degree of bolted joint will be weaker under some tightening torque.

关 键 词：螺纹联接 预紧力矩 微动摩擦功 微动损伤 

分 类 号：TH131.3[机械工程—机械制造及自动化] TH114