[1]林少芬,李瑰贤,王春林.基于JC方法计算构件疲劳断裂的可靠性[J].南京理工大学学报(自然科学版),2000,(03):281-284.
 LinShaofen LiGuixian WangChunlin.Fatigue Fracture Reliability Calculation of Components Based on JC Method[J].Journal of Nanjing University of Science and Technology,2000,(03):281-284.
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基于JC方法计算构件疲劳断裂的可靠性()
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2000年03期
页码:
281-284
栏目:
出版日期:
2000-06-30

文章信息/Info

Title:
Fatigue Fracture Reliability Calculation of Components Based on JC Method
作者:
林少芬李瑰贤王春林
哈尔滨工业大学机电工程学院, 哈尔滨150001
Author(s):
LinShaofen LiGuixian WangChunlin
School of Mechatronic Engineering,Harbin Institute of Technology,Harbin 150001
关键词:
可靠性 疲劳裂纹 方差 均值
Keywords:
reliability fatigue crack variance average value
分类号:
O346
摘要:
实际结构疲劳断裂的可靠性分析 ,由于受到各种不确定因素的影响 ,难以得到各状态变量的概率分布形式 ,因此无法采用传统的可靠性理论计算其可靠度及失效概率。该文通过采用验算点 (JC)方法并用实例说明 ,在工程实际中 ,能够同时考虑载荷、初始裂纹及材料的断裂韧性等非正态随机变量对疲劳裂纹扩展的影响 ,并能够在已知各状态变量的情况下 ,方便地计算可靠性指标与失效概率值。该方法对研究实际结构的疲劳断裂破坏的可靠性及疲劳寿命具有较好的实用性。
Abstract:
It is dif ficult to analyze the reliability of fatigue fracture of practical structure by using tradit ional reliability theory to calculate the reliability and the failure probability. Because it is affected by many uncertain factors, the probability dist ribution of each state variable can. t be got ten. In this paper, a practical example is g iven to illust rate that, in pract ice, the ef fect of all kinds of abnormal random variables on crack extension, such as the load, the primary f racture, the fracture toughness of the material, and so on, can be taken into account simultaneously using checking comput ing dot ( JC) method. When the mean value and square error of each random variable are know n, the reliability index and the failure probability value can be easily ca-l culated. T his method is suited for study ing the reliability and fat ig ue life in fatigue f racture breakag e.

参考文献/References:

1 郑学祥. 船舶及海洋工程结构的断裂与疲劳分析.北京: 海洋出版社, 19881 29~ 30
2 洪其麟.机械结构可靠性. 北京: 航空工业出版社, 19931 120~ 154
3 朱文予. 结构断裂模糊概率设计. 机械科学与技术.1996, 15( 4) : 486~ 489
4 黄克中, 毛善培.随机方法与模糊数学应用.上海: 同济大学出版社, 19871239~ 246
5 Ru- jen Chao, Bilal M A. Reliabilit y and uncertainty evaluation for longitudinal bending of hull g irders of surface ships. Journal of Ship Research, 1997, 41( 1) : 57~ 68

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备注/Memo

备注/Memo:
林少芬 女 38 岁 副教授
更新日期/Last Update: 2013-03-25