中国物理B ›› 2016, Vol. 25 ›› Issue (3): 34301-034301.doi: 10.1088/1674-1056/25/3/034301
所属专题: Virtual Special Topic — Acoustics
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
Sheng-Bing Chen(陈圣兵), Gang Wang(王刚)
Sheng-Bing Chen(陈圣兵)1, Gang Wang(王刚)2
摘要: Piezoelectric shunting arrays are employed to control the wave propagation in flexible beams. Contrary to conventional symmetric configuration, a substrate beam with anti-symmetric shunting arrays is investigated by adapted transfer matrix method. Compared with symmetric scheme, the anti-symmetric one demonstrates some distinctive characteristics. Primarily, the longitudinal and flexural waves are coupled, so they are correlated and must be considered simultaneously. Moreover, the attenuation of flexural wave is much stronger in anti-symmetric scenario, while the longitudinal wave demonstrates the converse side. As a result, the anti-symmetric scheme can be utilized to improve the vibration isolation capability of shunting arrays. Finally, the theoretical analyses are validated by finite element simulations.
中图分类号: (Mathematical theory of wave propagation)