9 April 2010 An electro-mechanical periodic system with piezoelectric transducers and coupled circuitry: dynamic analysis and applications
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Abstract
In this paper, we integrate piezoelectric transducers and coupled circuitry, which themselves form an electrical periodic system, onto a mechanical structure to form an electro-mechanical periodic system. The overall dynamics of the electro-mechanical system can thus be altered by tuning the electrical parameters. A transfer-matrix-based modeling technique is adopted in the dynamic analysis, where each element is represented by two state vectors at its both ends with a transfer matrix relating them. As the transfer matrix has the advantage on describing harmonic motions within the element, the global analysis can be facilitated given the repetitive nature of periodic systems. Numerical simulations are conducted to demonstrate the characteristics of wave propagation and attenuation in terms of propagation constants. Effects of each tunable parameter are also discussed through detailed parametric analysis. The proposed system can be tailored to various engineering needs. One example is adaptive vibration isolation with tunable effective frequency range. Another example is vibration energy harvesting through the piezoelectric transducers and circuitry.
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Y. Lu, Y. Lu, J. Tang, J. Tang, } "An electro-mechanical periodic system with piezoelectric transducers and coupled circuitry: dynamic analysis and applications", Proc. SPIE 7643, Active and Passive Smart Structures and Integrated Systems 2010, 764319 (9 April 2010); doi: 10.1117/12.847754; https://doi.org/10.1117/12.847754
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