炮钢低周疲劳特性预测  

Prediction of Low Cycle Fatigue Properties of Gun Steel

作　　者：张建[1] 唐文献[1] 彭松江[2] 古刚[2] 

机构地区：[1]江苏科技大学,江苏镇江212003 [2]中国船舶重工集团公司第七一三研究所,河南郑州450015

出　　处：《机械设计与制造》2013年第1期197-200,共4页Machinery Design & Manufacture

基　　金：国防基础研究课题项目(4010807030102);国家自然科学基金项目资助(51005108)

摘　　要：以五种典型炮钢的单轴拉伸和疲劳试验结果为基础,研究其强度极限、临界寿命、疲劳强度系数、临界疲劳强度与布氏硬度之间的关系,推导出炮钢低周疲劳特性的硬度预测模型。结果表明,炮钢的极限强度、疲劳强度系数、临界寿命、临界疲劳强度随着硬度增加而增加,简单一次函数可以有效拟合相应的试验数据;提出的硬度预测模型可以方便、快速、精确地预测出炮钢的低周疲劳特性,为火炮的疲劳寿命设计提供重要的应变-寿命曲线。Correlations between Ultimate tensile strength,transition fatigue life,fatigue strength coefficient,transition fatige strength and Brinell hardness were proposed,based on mechanical and fatigue experiments of 5 typical kinds of gun steel.And hardness prediction model on low cycle fatigue properties of gun steel was presented.The results showed that,the ultimate tensile strength,transition fatigue life,fatigue strength coefficient,transition fatige strength of gun steel increased with increasing hardness,which could be well fitted by simple linear functions.The proposed model could predict low cycle fatigue properties of gun steel handily,quickly and accurately,providing important strain-life cures for gun fatigue design.

关 键 词：炮钢 低周疲劳 预测 硬度 

分 类 号：TH16[机械工程—机械制造及自动化] E912[军事]