ZG230-450铸钢的疲劳可靠性设计Goodman-Smith图  

FATIGUE RELIABILITY DESIGN GOODMAN-SMITH DIAGRAM FOR THE ZG230-450 CAST STEEL

作　　者：黄诗尧[1] 赵永翔[1] 胡海斌 

机构地区：[1]西南交通大学牵引动力国家重点实验室,成都610031 [2]齐齐哈尔铁路车辆(集团)有限公司,齐齐哈尔161002

出　　处：《机械强度》2008年第1期117-121,共5页Journal of Mechanical Strength

基　　金：国家自然科学基金(50375130);全国优秀博士学位论文作者专项资金(200234);教育部新世纪人才培养计划(NCET040890);铁道部科技研究开发计划(2004J013,2005J034)资助项目~~

摘　　要：研究铁道车辆ZG230-450车轮铸钢疲劳可靠性设计Goodman-Smith图的绘制方法。图中疲劳寿命单位采用循环数或车辆行驶里程万公里,疲劳强度由中—短与长寿命范围的概率疲劳S—N曲线确定,图中转折点坐标与设计判据采用全概率模式求解。应用文中方法可获得任意可靠性水平下ZG230-450铸钢中短与长寿命范围的疲劳可靠性设计Goodman-Smith图。The drawing method of C, oodman-Smith diagram of the ZG230-450 wheel cast steel is investigated for the fatigue reliability design and analysis of railway vehicle wheel. The structural fatigue life unit in the diagram is given in terms of cycles or mileage of ten thousand kilometers. The fatigue strength is evaluated by the probabilistic fatigue S-N curves covering the mid-and-short and long life regimes. The transition point coordinates and design criteria of the diagram are determined in the full probabilistic sense. The Goodman-Smith diagram of ZG230-450 cast steel at arbitrary given reliability level during mid-short and long fatigue life regimes can be obtained by the present method.

关 键 词：铁道车辆 车轮 ZG230-450铸钢 疲劳 可靠性设计 Goodman-Smith图 

分 类 号：U270.41[机械工程—车辆工程] U260.331.1[交通运输工程—载运工具运用工程]