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In engineering design, to achieve high reliability and safety in multidisciplinary systems, Reliability Based Multidisciplinary Design Optimization (RBMDO) has received increasing attention. In this paper, Mean-value First Order Saddlepoint Approximation (MVFOSA) is introduced and combined with the collaborative optimization (CO) method to deal with the reliability analysis under aleatory uncertainty...
In this paper, a unified uncertainty analysis method based on the extension universal generating function is proposed for engineering problems described by the mixture of random, interval and p-box variables. In the method, the univariate approximation approach is extended for mixed variables, and then the performance function is divided into three parts. Traditional universal generating function...
Two types of uncertainty may exist in engineering. In this paper, a unified uncertainty (UUA) analysis method is proposed to handle the two types' uncertainties. The presented method involves three main steps: (1) sampling on both random variables and interval variables, (2) approximating the maximum entropy density function by using the first four moments, (3) determining the lower and upper bounds...
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