Optimized piezo-shunted metadamping towards the high-stiff high-damped metamaterial
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES(2024)
摘要
The phenomena of damping enhancement and higher decay coefficient are obtained by introducing a piezoelectric transducer at the resonating unit of the metamaterial. The difference between the damping ratio of the piezo-transducer controlled and that of the equivalent uncontrolled metamaterial is termed metadamping, and thereby it is used to indicate the enhancement of energy dissipation characteristics. The optimum inductance and resistance of the impregnated piezo-transducer are computed to minimize the response of the outer mass of a unit cell by implementing H 2 optimization technique. A parametric study is conducted after applying Bloch's theorem, and the enhancement of damping over the complete Brillouin zone is determined to get a comprehension of the metadamping phenomenon. Impregnation of the piezo-transducer at the resonating unit not only enhances the normalized bandwidth more than twice but also significantly increases the damping emergence when compared to the equivalent uncontrolled metamaterial. This envisioned the promise of high-stiff, high-damped metamaterial for enhanced transient vibration control as well as wider attenuation bandgap.
更多查看译文
关键词
Metadamping,piezoelectric transducer,H-2 optimization,damping emergence
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要