| 两个疲劳分散系数计算公式之间的关系的研究 |
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| 引用本文： | 毛传孝,李祖钊.两个疲劳分散系数计算公式之间的关系的研究[J].直升机技术,1997(2). |
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| 作者姓名： | 毛传孝 李祖钊 |
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| 作者单位： | 中国直升机设计研究所，中国直升机设计研究所 景德镇 333001，景德镇 333001 |
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| 摘 要： | 常见的计算疲劳分散系数的公式有:(1)Antilog和(2)Antilog。国内外有的文献认为公式(1)的缺点是未说明以何种置信度确定母体均值,主张在应用公式(1)之前先对母体均值进行区间估计。本文提出了安全疲劳寿命(或极限)直线的概念,指出两个公式实际上是该直线的两种不同表示形式,并导出了它们之间的等效变换关系,从而说明公式(1)也象(2)一样包含有母体均值置信度的信息。
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| 关 键 词： | 疲劳寿命 疲劳强度 可靠性 分散系数 |
RESEARCH ON RELATION BETWEEN TWO FORMULAE FOR CALCULATING THE FATIGUE SCATTER FACTORS |
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| Authors: | Mao Chuanxiao Li Zhuzhao |
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| Abstract: | The usual formulae for calculating the fatigue scatter factors are: (1) Antilog ( ) and (2) Antitog ( ). It is tbought that a disadvantage of formula (1) is that no statement can be made about the confidence with witch the population mean has been determined. Making an interval estimate of populatbn mean s suggested before applying formula (1) . Authors set up a concept of safe fatigue life (or limit) line, show that the two formulae are two different representative forms of the line in fact, and derive a equivalently trarsform formula from each into other. Therefore formula (1) contains as the information on the confidence as formula (2). |
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| Keywords: | Fatigue life Fatigue strength reliability scatter factor |
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