桥机焊接箱形梁疲劳裂纹扩展及剩余寿命分析  

Fatigue Crack Expanding and Remaining Life Analysis for Welding Box Girder of Overhead Travelling Crane

作　　者：姜冰[1] 高崇仁[1] 陈栋梁[1] 李然[1] 

机构地区：[1]太原科技大学机电工程学院,山西太原030024

出　　处：《机械工程与自动化》2012年第2期111-112,共2页Mechanical Engineering & Automation

摘　　要：研究了含疲劳裂纹的桥式起重机焊接箱形梁裂纹扩展的一般规律。运用断裂力学推导出疲劳裂纹寿命计算公式,用以估算桥式起重机主梁的剩余寿命。This paper studied the general rule of fatigue crack expanding in welding box girder of overhead travelling crane.Through using the fracture mechanics,the formula of the fatigue crack growth was derived,for estimating the remaining life of the beam.

关 键 词：桥式起重机 焊接箱形梁 剩余寿命 

分 类 号：TH215[机械工程—机械制造及自动化]