桥式起重机焊接箱形梁疲劳寿命新算法  

New methods for calculating fatigue life of welded box girder of overhead travelling crane

作　　者：王志海 

机构地区：[1]河南卫华重型机械有限公司,新乡453400

出　　处：《起重运输机械》2011年第9期8-11,共4页Hoisting and Conveying Machinery

摘　　要：桥式起重机的寿命通常由焊接箱形梁的疲劳寿命决定,在此研究了接近于实际的桥式起重机焊接箱形梁试件的疲劳寿命,得到了不同可靠度R下疲劳寿命的对数函数表达式和指数函数表达式,有助于桥式起重机主梁疲劳寿命的优化计算。The life of overhead travelling crane is usually determined by the fatigue life of welded box girder,the paper,therefore,studies the fatigue life of the test piece that is similar to the welded box girder of the overhead travelling crane,and then derives the logarithmic and exponential function expressions for the fatigue life under varied reliability R.It provides a reference for optimization calculation of the fatigue life of the main girder of the overhead travelling crane.

关 键 词：桥式起重机 焊接箱形梁 疲劳寿命 计算 

分 类 号：TH215[机械工程—机械制造及自动化]