强度和寿命分布模型的统一描述与检验

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1996, Vol. 17 ›› Issue (S1): 48-52.

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UNIVERSAL DISTRIBUTION MODEL OF STRENGTH AND LIFE AND ITS TEST

Dong Cong, Rong Haiwu, He Qingzhi

Institute of Aircraft Design, Beijing University of Aeronautics and Astronautics, Beijing, 100083

Received:1995-03-17 Revised:1995-08-20 Online:1996-11-25 Published:1996-11-25

Abstract

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.

Key words: strength life, Weibull distribution, Bvalue

CLC Number:

215. 5

Dong Cong;Rong Haiwu;He Qingzhi. UNIVERSAL DISTRIBUTION MODEL OF STRENGTH AND LIFE AND ITS TEST[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1996, 17(S1): 48-52.

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UNIVERSAL DISTRIBUTION MODEL OF STRENGTH AND LIFE AND ITS TEST

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