Effects of a piezoelectric based nonlinear energy sink on the behavior of an electromechanically coupled beam

Tarcisio M. P. Silva; Marcel A. Clementino; Carlos De Marqui Jr.; Alper Erturk

doi:10.1117/12.2302682

15 March 2018 Effects of a piezoelectric based nonlinear energy sink on the behavior of an electromechanically coupled beam

Tarcisio M. P. Silva, Marcel A. Clementino, Carlos De Marqui Jr., Alper Erturk

Author Affiliations +

Proceedings Volume 10595, Active and Passive Smart Structures and Integrated Systems XII; 1059509 (2018) https://doi.org/10.1117/12.2302682
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2018, Denver, Colorado, United States

Abstract

Various researchers have investigated the behavior of a linear oscillator weakly coupled to a nonlinear mechanical attachment that has essential stiffness nonlinearity. Under certain conditions, the essentially nonlinear attachment can act as a nonlinear energy sink (NES) and the irreversible transfer of vibration energy from a main structure to the nonlinear attachment is observed. Another characteristic of an essentially nonlinear attachment is the nonexistence of a resonance frequency. Therefore, nonlinear energy sinks have increased robustness against detuning. While mechanical nonlinear attachments are usually linked to a host structure by nonlinear mechanical elements, linear coupling (piezoelectric transduction) is observed in piezoelectric based nonlinear energy sinks and nonlinearity can be achieved through electrical circuit design. This work presents an experimentally validated piezoelectric based nonlinear energy sink. An essentially nonlinear piezoelectric shunt circuit and its practical realization are discussed in detail. The circuit nonlinear behavior and the performance of the piezoelectric nonlinear energy sink to attenuate vibrations of a cantilever over a wide range of frequencies are experimentally validated.

Citation Download Citation

Tarcisio M. P. Silva, Marcel A. Clementino, Carlos De Marqui Jr., and Alper Erturk "Effects of a piezoelectric based nonlinear energy sink on the behavior of an electromechanically coupled beam", Proc. SPIE 10595, Active and Passive Smart Structures and Integrated Systems XII, 1059509 (15 March 2018); https://doi.org/10.1117/12.2302682

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