基于Ansys及应力测试的铸造起重机疲劳裂纹失效分析  

Failure analysis of fatigue crack of ladle crane based on Ansys and stress test

作　　者：李福森 汤秀丽[2] 齐到满 贾华龙 

机构地区：[1]国家起重运输机械质量监督检验中心,北京100007 [2]北京起重运输机械设计研究院,北京100007

出　　处：《起重运输机械》2017年第3期74-79,共6页Hoisting and Conveying Machinery

基　　金：国家科技支撑计划资;课题名称"桥式起重机械轻量化共性技术研究"(2015BAF06B01)

摘　　要：以某钢厂YZS165/40 t-21.5 m型铸造起重机为研究对象,针对其桥架结构的裂纹位置及疲劳情况,研究出现疲劳裂纹的主要原因,建立起重机桥架金属结构的有限元模型,分典型工况进行应力分析,并结合现场的应力测试和焊缝超声波检测,为该起重机及同型号起重机的修复及改进设计提供了理论依据,为铸造起重机金属结构安全评估奠定了基础。With a YZS165/40t-21.5m ladle crane in a steel plant as a study object, the focus of the studv is the crack position and fatigue status of the bridge structure of the crane. The paper investigates reasons behind fatigue crack, and a finite element model for the metal bridge structure of the crane is established. Stress is analyzed under different typical working conditions, and field stress test and weld ultrasonic detection are combined in the paper, which provide theoretical basis for the repair and improvement design of the crane and cranes of the same model and lays foundation for the security assessment of the metal structure of ladle cranes.

关 键 词：铸造起重机 ANSYS 应力测试 疲劳裂纹 失效分析 

分 类 号：TG231.1[金属学及工艺—铸造]