Independent modal resonant shunt for multimode vibration control of a truss-cored sandwich panel

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Abstract

To realize multimode vibration control of a truss-cored sandwich panel, an independent modal resonant shunt control method is proposed in this paper. In this method, each piezoelectric stack transducer is connected to a single resonant shunt which is tuned to control the vibration of a single mode, and the location of the transducer is optimized to get a maximal electromechanical coupling with this mode. It is found that the optimal values of the resistance and inductance can not be determined by using a single-mode model of the structure, and thus a practical optimization method is employed to optimize the resonant shunt, which is verified with numerical simulation. The result shows that this method can add significant damping ratio to the controlled modes, and the resonant shunt circuits of different modes have no effect on each other. Finally the control effect of resonant shunt is compared with viscoelastic damper. It is indicated that the parameters of the resonant shunt can be tuned to get better effect.

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Guo, K. M., & Jiang, J. (2014). Independent modal resonant shunt for multimode vibration control of a truss-cored sandwich panel. International Journal of Dynamics and Control, 2(3), 326–334. https://doi.org/10.1007/s40435-013-0036-7

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