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- W1992715622 abstract "Combing the subsystem modal coupling theory and the impedance-mobility approach, a general analytical model is developed for the analysis and active control of structural acoustic transmission through the double panel-cavity structure into the free field, in which control methods including incident panel piezoelectric (PZT) actuator, acoustic actuator in cavity, and radiating panel PZT actuator are considered. The matrix formulae for the modal response of the coupled structural acoustic system and optimal secondary source strengths are obtained. On the basis, active control of sound transmission is studied analytically and numerically in detail. Simulations and analyzes are conducted to compare the control effects between different control strategies and examine the dominant control mechanisms involved in each control case, and the effect of system parameters on control effect is also examined. The results demonstrate that the incident panel actuator can obtain sound attenuation by modal suppression or rearrangement of three subsystems so many complex control mechanisms are involved and it is effective for incident panel modes, cavity modes, and radiating panel modes. Using the secondary acoustic source in the cavity is a better control strategy compared to the other control strategies due to the dominance of the acoustic mode (0,0,0) in the modal couplings and energy transmission in low frequency range." @default.
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- W1992715622 date "2010-10-01" @default.
- W1992715622 modified "2023-10-18" @default.
- W1992715622 title "An analytical study on active control and mechanisms of sound transmission through double panel‐cavity system." @default.
- W1992715622 doi "https://doi.org/10.1121/1.3508703" @default.
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