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Reliability Based Design Optimization with Variation of Standard Deviation  

Lim, O-Kaung (부산대학교 기계공학부)
Kim, Hyung-Wook (부산대학교 기계설계공학과)
Choi, Eun-Ho (부산대학교 기계설계공학과)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.21, no.5, 2008 , pp. 413-419 More about this Journal
Abstract
Deterministic design optimization (DO) does not explicitly deal with a variety of factors from inherent randomness and uncertainties. Reliability based design optimization(RBDO) is necessary to use in engineering systems in order to guarantee quality and performance of product. In this paper, design variables are considered as random variables. Standard deviation according to change of design variables have changed as much as coefficient of variation. And, if the standard deviation is error of manufacturing, standard deviation-mean relation is concave form. We obtain reliability index using advanced first order second moment method(AFOSM). This paper is examined by solving two examples and the results are compares with DO, RBDO and suggested RBDO.
Keywords
reliability based design optimization; safety index; target performance;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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