Open AccessVibration Attenuation Optimization in a Rod With Different Periodic Piezoelectric Shunting Configurations
Author(s) -
Hui Guo,
Yaru Zhang,
Yuan Tao,
Pei Sun Qian,
Qian Cheng,
Yansong Wang
Publication year - 2021
Language(s) - English
DOI - 10.20855/ijav.2021.26.31751
Subject(s) - attenuation , shunting , acoustics , vibration , piezoelectricity , materials science , vibration control , constant (computer programming) , physics , optics , computer science , medicine , programming language
Wave propagation control in piezoelectric meta-materials has been extensively investigated in recent years due to its significant effects on elastic wave attenuation. In this work, a novel piezoelectric meta-material rod connected to three configurations of shunting circuits is proposed for broad band gaps. The numerical model is constructed to predict the band gap, attenuation constant, and vibration transmission. For larger attenuation within the band gaps, the shunting circuit parameters are optimized with a genetic algorithm. The result shows that the structure with the optimized parameters provides prominent vibration control ability. Both the attenuation constant and the width of the band gaps are enlarged.