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- W2947983981 abstract "Non-probabilistic reliability based multidisciplinary design optimization has been widely acknowledged as an advanced methodology for complex system design when the data is insufficient. In this work, the uncertainty propagation analysis method in multidisciplinary system based on subinterval theory is firstly studied to obtain the uncertain responses. Then, based on the non-probabilistic set theory, the interval reliability based multidisciplinary design optimization model is established. Considering that the gradient information of interval reliability cannot be acquired in the whole design domain, which causes convergence difficulties and prohibitive computation, an interval reliability displacement based multidisciplinary design optimization method is proposed to address the issue. In the proposed method, the interval reliability displacement is introduced to measure the degree of interval reliability. By doing so, not only the connotation of the interval reliability is guaranteed, but more importantly, the partial gradient region for interval reliability is equivalently converted into full gradient region for reliability displacement. Consequently, the gradient information can be acquired under any circumstances and thus the convergence process is highly accelerated by utilizing the gradient optimization algorithms." @default.
- W2947983981 created "2019-06-07" @default.
- W2947983981 creator A5029923570 @default.
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- W2947983981 date "2019-11-01" @default.
- W2947983981 modified "2023-10-16" @default.
- W2947983981 title "Efficient strategy for reliability-based optimization design of multidisciplinary coupled system with interval parameters" @default.
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- W2947983981 doi "https://doi.org/10.1016/j.apm.2019.05.030" @default.
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