交通运输工程学报
JOURNAL OF TRAFFIC AND TRANSPORTATION ENGINEERING
2003 Vol.3 No.2 P.11-17


铁道车辆LZ50车轴钢的概率机械性能

Probabilistic mechanical properties of LZ50 axle steel for railway vehicles

赵永翔  黄郁仲  高庆 

摘 要:完成了铁道车辆LZ50车轴钢的概率机械性能试验研究,拓宽了确定有限疲劳可靠性数据良好假设分布的统一方法,比较了6种常用分布(即三参数Weibull、两参数Weibull、正态、对数正态、极大值和极小值分布)对试验数据的描述效果,综合分析了他们的拟合优度、失效机理的一致性和尾部预测的安全性.从预测的安全性角度,选择了极小值分布为最佳统计模型,提出了给定可靠度和置信度下基于极小值分布的机械性能参数估计方法,并有效地估计了材料的概率机械性能参数.
关键词:铁道车辆;车轴;LZ50钢;机械性能;可靠性;对数正态分布
分类号:U260.331.1;TG113.25;TB114.3  文献标识码:A

文章编号:1671-1637(2003)02-0011-07

基金项目:国家自然科学基金项目(50075073);全国优秀博士学位论文作者专项资金项目(2002067);铁道部科技研究开发计划项目(2001J016)
作者简介:赵永翔(1963-),男,四川金堂人,教授,博士,从事机车车辆可靠性与安全性设计、评价和控制研究.
作者单位:赵永翔(西南交通大学,机械工程研究所,四川,成都,610031) 
     黄郁仲(西南交通大学,应用力学与工程系,四川,成都,610031) 
     高庆(西南交通大学,应用力学与工程系,四川,成都,610031) 

参考文献:

[1]Freudenthal A M.Safety of structure[J].Trans.ASCE,1947,112:125-128.
[2]Freudenthal A M.Physical and statistical aspects of fatigue[J].Adv.Appl.Mech.,1956,4:116-156.
[3]Kecocioglu D.Reliability analysis of mechanical components and systems[J].Nucl. Eng.Des.,1972,19:259-290.
[4]Haugen E B.Probabilistic Mechanical Design[M].New York:John Wiley and Sons,1980.
[5]Proven J W.Probability Fracture Mechanics and Reliability[M].Dordrecht:Martnus Nijhoff Publishers,1987.
[6]TB/T 1335-1996,铁道车辆强度设计及试验鉴定规范[S].
[7]肖纪美.铁路车轴钢40与50的比较[J].材料导报,2000,14(6):7-8.XIAO Ji-mei.Some comparison between steels 50 and 40 used for railroad axles [J].Transactions on Materials,2000,14(6):7-8.(in Chinese).
[8]钟群鹏.对40、50轴钢的几点看法[J].材料导报,2000,14(6):9-10.ZHONG Qun-peng.The views on carbon steel 40 and 50 for the vehicle shaft[J].Transactions on Materials,2000,14(6):9-10.(in Chinese).
[9]Mencik J.Reliability assessment with small amount of experi-mental data[R].In Structural Safety and Reliability: ICOSSAR'01.187-194.
[10]赵永翔.低周疲劳短裂纹行为和可靠性分析[D].成都: 西南交通大学,1998.ZHAO Yong-xiang.Short fatigue crack behavior and reliability analysis in low cycle fatigue[D].Chengdu:Southwest Jiaotong University,1998. (in Chinese)
[11]Tanaka T,Sakai T,Iwaya T.Distribution characteristics offatigue lives and fatigue strengths of ferrous metals by the analysis of P-N data in the JSME data base on fatigue strength of metallic materials [A].In Statistical Research on Fatigue and Fracture[C].London:Elsevier Applied Science Publishers,1987.125-157.
[12]Baldwin J D,Thacker J G.A strain-based fatigue reliabilityanalysis method [J].ASME Journal of Mechanical Design,1995,117:229-234.
[13]The Committee on Fatigue and Fracture Reliability of the Co-mmittee on Structural Safety and Reliability of the Structural Division.Fatigue reliability:introduction [J].J.Struct.Div.Proc.ASCE,1982,108(ST1):3-23.
[14]赵永翔,孙亚芳,高庆.分析常用7种统计分布的统一线性回归方法[J].机械强度,2001,23(1):102-106.ZHAO Yong-xiang,SUN Ya-fang,GAO Qing.Unified linear regression method for the analysis of seven commonly used statistical distributions [J].J.Mech.Strength,2001,23(1):102-106.(in Chinese).
[15]Zhao Y X,Gao Q,Wang J N.An approach for determining anappropriate assumed distribution of fatigue life under limited data [J].Reliab.Eng.Sys.Saf.,2000,67(1):1-7.
[16]Zhao Y X,Gao Q,Sun X F. A statistical investigation of thefatigue lives of Q235 steel-welded joints [J].Fatigue Fract.Eng.Mater.Struct.,1998,21:781-790.
[17]Zhao Y X,Wang J N,Gao Q.Random cyclic stress-strain resp-onses of a stainless steel pipe-weld metal I-a statistical investigation [J].Nucl.Eng.Des.,2000,199:303-314.
[18]Zhao Y X,Wang J N,Gao Q.Statistical evolution of small fatigue crack in 1Cr18Ni9Ti weld metal [J].Theor.Appl.Fract.Mech.,1999,32:55-64.
[19]Zhao Y X.Size evolution of the surface short fatigue cracks of 1Cr18Ni9Ti pipe-weld metal with a local viewpoint [J].Mater.Sci.Eng.A,2003,344:229-239.
[20]赵永翔,王金诺,高庆.确定有限疲劳可靠性数据良好假设分布的一种统一方法[J].中国机械工程,2001,12(12):1 343-1 347.ZHAO Yongxiang,WANG Jinnuo,GAO Qing.Unified approach for determining an appropriate assumed distribution of limited fatigue reliability data [J].Journal of China Mech.Eng.,2001,12(12):1 343-1 347.(in Chinese)


收稿日期:2002年11月3日

出版日期:2003年6月1日