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• W4286776262 endingPage "103003" @default.
• W4286776262 startingPage "103003" @default.
• W4286776262 abstract "Sound transmission loss (STL) occurs as waves propagate through a structure. In order to reduce the sound transmission through a cylinder with better STL, an acoustic quieting process needs to be implemented. One efficient ways to minimize sound transmission is using piezoelectric materials, which can be applied to reduce transmitted noise in different structures instead of damping approaches avoiding burdensome to fully dampen structural vibrations via passive methods. This study proposes a model using different sizes and configurations of piezoelectric electrode patches to increase the STL through thick-walled piezo-laminated cylindrical shells. The cylindrical shell is modeled using the three-dimensional theory of elasticity and piezoelasticity, and the Helmholtz equation is used for the wave propagation consideration inside the acoustic cavity as well as through the surrounding fluids. The STL is calculated using an exact integration of acoustic power over the outside surface of the shell. The analytical solution is compared with finite element numerical results to verify its validity. Parametric studies are conducted to investigate the effects of sizes and configurations of electrodes on STL. Results are presented with specific recommendations regarding the electrode size and configuration for active sound absorption. In addition, by proper choice of electrode size, one can avoid the resonance frequencies of the cylinder to provide higher sound transmission loss. • Analytical model of wave behavior in piezo-shell with discrete electrodes is proposed. • Effects of piezo electrodes configuration on sound transmission loss (STL) is studied. • Piezoelectric potential on STL is enhanced by tuning electrode sizes and locations." @default.
• W4286776262 created "2022-07-23" @default.
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• W4286776262 date "2022-09-01" @default.
• W4286776262 modified "2023-09-29" @default.
• W4286776262 title "Effects of electrode size and configuration on sound transmission loss in piezo-laminated thick shell" @default.
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• W4286776262 doi "https://doi.org/10.1016/j.wavemoti.2022.103003" @default.
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