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http://dx.doi.org/10.3795/KSME-A.2017.41.4.291

System Reliability Analysis Considering Correlation of Performances  

Kim, Saekyeol (Dept. of Automotive Engineering, Hanyang Univ.)
Lim, Woochul (Mando Corporation)
Lee, Tae Hee (Dept. of Automotive Engineering, Hanyang Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.41, no.4, 2017 , pp. 291-297 More about this Journal
Abstract
Reliability analysis of a mechanical system has been developed in order to consider the uncertainties in the product design that may occur from the tolerance of design variables, uncertainties of noise, environmental factors, and material properties. In most of the previous studies, the reliability was calculated independently for each performance of the system. However, the conventional methods cannot consider the correlation between the performances of the system that may lead to a difference between the reliability of the entire system and the reliability of the individual performance. In this paper, the joint probability density function (PDF) of the performances is modeled using a copula which takes into account the correlation between performances of the system. The system reliability is proposed as the integral of joint PDF of performances and is compared with the individual reliability of each performance by mathematical examples and two-bar truss example.
Keywords
Copula; Correlation; Joint Probability Density Function; Reliability Analysis; System Reliability Analysis;
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Times Cited By KSCI : 1  (Citation Analysis)
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