桥式起重机吊钩横梁的疲劳寿命估算  

The Fatigue Life Estimation of the Bridge Crane's Hook Crossbeam

作　　者：强宝民[1] 袁仁武 张德宽 魏兴 

机构地区：[1]第二炮兵工程大学203教研室,西安710025

出　　处：《科学技术与工程》2015年第1期224-227,236,共5页Science Technology and Engineering

摘　　要：以某库房32 t桥式起重机的吊钩横梁为研究对象,通过有限元分析和现场实测确定吊钩横梁危险部位应力与起重量的关系;并通过监测起重机的工作循环次数和起重量获取吊钩横梁危险部位的应力谱。在此基础上,结合材料的P-S-N曲线,利用线性累积损伤理论对吊钩横梁进行了疲劳寿命估算。The hook crossbeam of the 32 t bridge crane which in a storehouse as the research object is took,obtained the relationship of the stress of the hook crossbeam＇ s dangerous part and the weight by the finite element analysis and measure,gained the stress spectrum of the hook crossbeam＇ s dangerous part through monitoring the crane＇ s working cycle number and the weight.On the basis of the stress spectrum,according to the P-S-N curve of the material,the linear cumulative damage theory is used to estimate the fatigue life of the hook crossbeam.

关 键 词：吊钩横梁 有限元分析 线性累积损伤理论 疲劳寿命估算 

分 类 号：TH215[机械工程—机械制造及自动化]