Wave Propagation Control in Beams Through Periodic Multi-Branch Shunts

被引：89

作者：

Airoldi, L. ^{[1
]}

Ruzzene, M. ^{[2
]}

机构：

[1] Georgia Inst Technol, D Guggenheim Sch Aerosp Engn, Atlanta, GA 30332 USA

[2] Georgia Inst Technol, GW Woodruff Sch Mech Engn, Atlanta, GA 30332 USA

来源：

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES | 2011年 / 22卷 / 14期

关键词：

multi-resonance shunts; periodic beams; attenuation frequency ranges; bandgaps; PIEZOELECTRIC MATERIALS; VIBRATION; ATTENUATION;

D O I：

10.1177/1045389X11408372

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Periodic, shunted piezoelectric patches are applied for the control of wave propagation in beams. The patches are shunted through resonant circuits featuring a single and multiple resonances. The periodic arrangement of shunted patches provides the beam with attenuation properties which depend on the resonant behavior of the shunts. This article specifically illustrates the effectiveness of periodic shunted patches for passive wave propagation control, and focuses on the application of multi-resonant circuits for the generation of multiple attenuation frequency ranges (bandgaps), which can be tuned to target several structural modes of the beam. A numerical model predicts the attenuation characteristics of the beam for different shunting configurations. The experimental implementation of the concept on a beam with five patches illustrates the effectiveness of the method in terms of its attenuation capabilities and its tunable characteristics.

引用

页码：1567 / 1579

页数：13