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• W4384436114 abstract "The propeller fluctuating force is being recognized as the dominant source of underwater radiated noise, its accurate acquisition is thus necessitated for a reliable acoustic-structure analysis and optimization of marine ships. However, such dynamic operational forces are frequently impossible or expensive to directly measure due to various practical challenges. To alleviate this limitation, this paper presents an inverse method for the indirect estimation of propeller forces using measured shafting vibration responses. The force reconstruction procedure is constructed based on the state-space model of the propeller–shafting system, which can be derived by a data-driven subspace identification algorithm in conjunction with either the numerical or experimental models of the system. To ensure the robustness of the inverse analysis in the presence of inevitable measurement noise, a modified regularization strategy based on homotopy continuation is introduced. The effectiveness of the proposed algorithm is demonstrated through numerical simulations and experimental investigations. The obtained results demonstrate the potential feasibility of indirect measurement for accurately identifying propeller fluctuating forces in the time domain." @default.
• W4384436114 created "2023-07-16" @default.
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• W4384436114 date "2023-10-01" @default.
• W4384436114 modified "2023-10-15" @default.
• W4384436114 title "Indirect measurement of propeller fluctuating forces using an inverse analysis: Numerical and experimental studies" @default.
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• W4384436114 doi "https://doi.org/10.1016/j.oceaneng.2023.115337" @default.
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