机械科学与技术2017，Vol.36Issue(2)：172-177,6.DOI:10.13433/j.cnki.1003-8728.2017.0202
栓焊并用连接结构疲劳寿命分析
Analysis on Fatigue Life of Co-use of Weld and Bolts Joint
摘要
Abstract
In order to analyze the fatigue property of co-use joint with transverse fillet weld and high-stress bolts,fatigue test was performed to contrast fatigue life difference and fatigue mechanism between weld joint and co-use joint.Then the influence of the high-stress bolt on the fatigue life of co-use joint was obtained and the results show that high-stress bolt can effectively extend the fatigue life by reducing the force of weld and restraining the crack propagation which increases the connection stiffness of structure.Meanwhile,the fatigue life of co-use of weld and bolts joint was estimated via equivalent structural stress method.The estimation results was in a well agreement with the test results and the error was less than 10％.It indicated the applicability of equivalent structural stress method to estimate the fatigue life of co-use joint with transverse fillet weld and high-stress bolts.关键词
栓焊并用/疲劳寿命/疲劳机理/等效结构应力法Key words
co-use of weld and bolts/failure analysis/fatigue mechanism/equivalent structural stress method分类
数理科学引用本文复制引用
王勇哲,曲传咏,秦庆华..栓焊并用连接结构疲劳寿命分析[J].机械科学与技术,2017,36(2):172-177,6.基金项目
973课题(2013CB035402)、863课题(2012AA041801)、国家自然科学基金科学仪器基础研究专款项目(11127202)及国家自然科学基金面上项目(11372213)资助 （2013CB035402）
