Investigations of thickness-shear mode elastic constant and damping of   shunted piezoelectric materials with a coupling resonator

doi:10.1088/1674-1056/25/12/127701

CORC > 北京大学 > 信息科学技术学院

	Investigations of thickness-shear mode elastic constant and damping of shunted piezoelectric materials with a coupling resonator
	Hu, Ji-Ying ; Li, Zhao-Hui ; Sun, Yang ; Li, Qi-Hu
刊名	CHINESE PHYSICS B
	2016
关键词	piezoelectric materials shunt damping shear mode elastic constant THIN-FILMS BROAD-BAND VIBRATION REDUCTION PIEZOCERAMICS NETWORKS COATINGS CIRCUIT DESIGN MODULI
DOI	10.1088/1674-1056/25/12/127701
英文摘要	Shear-mode piezoelectric materials have been widely used to shunt the damping of vibrations where utilizing surface or interface shear stresses. The thick-shear mode (TSM) elastic constant and the mechanical loss factor can change correspondingly when piezoelectric materials are shunted to different electrical circuits. This phenomenon makes it possible to control the performance of a shear-mode piezoelectric damping system through designing the shunt circuit. However, due to the difficulties in directly measuring the TSM elastic constant and the mechanical loss factor of piezoelectric materials, the relationships between those parameters and the shunt circuits have rarely been investigated. In this paper, a coupling TSM electro-mechanical resonant system is proposed to indirectly measure the variations of the TSM elastic constant and the mechanical loss factor of piezoelectric materials. The main idea is to transform the variations of the TSM elastic constant and the mechanical loss factor into the changes of the easily observed resonant frequency and electrical quality factor of the coupling electro-mechanical resonator. Based on this model, the formular relationships are set up theoretically with Mason equivalent circuit method and they are validated with finite element (FE) analyses. Finally, a prototype of the coupling electro-mechanical resonator is fabricated with two shear-mode PZT5A plates to investigate the TSM elastic constants and the mechanical loss factors of different circuit-shunted cases of the piezoelectric plate. Both the resonant frequency shifts and the bandwidth changes observed in experiments are in good consistence with the theoretical and FE analyses under the same shunt conditions. The proposed coupling resonator and the obtained relationships are validated with but not limited to PZT5A.; National Defense Foundation of China [9149A12050414JW02180]; SCI(E); 中国科技核心期刊(ISTIC); ARTICLE; lizhcat@pku.edu.cn; 12; 25
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/458250]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Hu, Ji-Ying,Li, Zhao-Hui,Sun, Yang,et al. Investigations of thickness-shear mode elastic constant and damping of shunted piezoelectric materials with a coupling resonator[J]. CHINESE PHYSICS B,2016.
APA	Hu, Ji-Ying,Li, Zhao-Hui,Sun, Yang,&Li, Qi-Hu.(2016).Investigations of thickness-shear mode elastic constant and damping of shunted piezoelectric materials with a coupling resonator.CHINESE PHYSICS B.
MLA	Hu, Ji-Ying,et al."Investigations of thickness-shear mode elastic constant and damping of shunted piezoelectric materials with a coupling resonator".CHINESE PHYSICS B (2016).