摘要
结合动、静态应力测试,引用断裂力学的相关知识,在裂纹失稳后逐步扩展的过程中,计算含裂纹起重机主梁的安全性,进而推算主梁焊接结构的寿命。
Combining static and dynamic stress test,by use of the relative knowledge of fracture mechanics,we calculated the crane girder＇s safety during the crack instable and propagating process,and then calculated the life of the main beam with welding structure.
出处
《机械工程与自动化》
2011年第2期126-127,共2页
Mechanical Engineering & Automation
关键词
起重机
断裂力学
疲劳寿命
crane
fracture mechanics
fatigue life
