| 强度和寿命分布模型的统一描述与检验 |
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| 引用本文： | 董聪,戎海武,何庆芝.强度和寿命分布模型的统一描述与检验[J].航空学报,1996,17(Z1):48-52. |
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| 作者姓名： | 董聪 戎海武 何庆芝 |
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| 作者单位： | 北京航空航天大学飞机设计研究所, 北京, 100083 |
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| 摘 要： | 证明了：①三参数Ｗｅｉｂｕｌ分布可有效地拟合正态数据和对数正态数据；②两参数Ｗｅｉｂｕｌ分布（Ｂ１）、正态分布（Ｂ２）、对数正态分布（Ｂ３）和三参数Ｗｅｉｂｕｌ分布（Ｂ４）的Ｂ基值间存在以下关系Ｂ１＜Ｂ２＜Ｂ３＜Ｂ４；③在工程中常见的情况下，以三参数Ｗｅｉｂｕｌ分布拟合正态数据和对数正态数据，其Ｂ基值的相对估值误差ε＜５％。
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| 关 键 词： | 强度 寿命 Weibul分布B基值 |
| 收稿时间： | 1995-03-17 |
| 修稿时间： | 1995-08-20 |
UNIVERSAL DISTRIBUTION MODEL OF STRENGTH AND LIFE AND ITS TEST |
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| Dong Cong,Rong Haiwu,He Qingzhi.UNIVERSAL DISTRIBUTION MODEL OF STRENGTH AND LIFE AND ITS TEST[J].Acta Aeronautica et Astronautica Sinica,1996,17(Z1):48-52. |
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| Authors: | Dong Cong Rong Haiwu He Qingzhi |
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| Institution: | Institute of Aircraft Design, Beijing University of Aeronautics and Astronautics, Beijing, 100083 |
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| Abstract: | It is proved that: ①It is feasible using 3 parameter Weibull distribution to fit normal or lognormal data, ②The following relationship exists: B 1< B 2< B 3< B 4, among which, B 1, B 2, B 3 and B 4 is B value of 2 parameter Weibull, normal, lognormal and 3 parameter Weibull distribution respectively, ③In the case of general engineering application, the relative error ε of B value is lower than 5 percent when 3 parameter Weibull distribution is used to fit normal or lognormal data. |
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| Keywords: | strength life Weibull distribution Bvalue |
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