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Uncertainty Propagation in Multi-Disciplinary Design Optimization of Undersea Vehicles
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Uncertainty Propagation in Multi-Disciplinary Design Optimization of Undersea Vehicles
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Journal Article
Uncertainty Propagation in Multi-Disciplinary Design Optimization of Undersea Vehicles
2009
Overview
In this paper the development of statistical metamodels and statistical fast running models is presented first. They are utilized for propagating uncertainties in a multi-discipline design optimization process. Two main types of uncertainty can be considered in this manner: uncertainty due to variability in design variables or in random parameters; uncertainty due to the utilization of metamodels instead of the actual simulation models during the optimization process. The value of the new developments and their engagement in multi-discipline design optimization is demonstrated through a case study. An underwater vehicle is designed under four different disciplines, namely, noise radiation, self-noise due to TBL excitation, dynamic response due to propulsion impact loads, and response to an underwater detonation. The case study also demonstrates the value of the multi-discipline design optimization in identifying a system level optimum, and it emphasizes the importance of including uncertainties in the design optimization process.
