Low-frequency elastic wave attenuation in a composite acoustic black hole beam
Low-frequency elastic wave attenuation in a composite acoustic black hole beam
复制标题
复合声学黑洞梁中的低频弹性波衰减
DOI:
10.1016/j.apacoust.2019.04.029
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发表时间:
2019-11
影响因子:
3.4
通讯作者:
Hou Hong
中科院分区:
文献类型:
--
作者:
Gao Nansha;Wei Zhengyu;Zhang Ruihao;Hou Hong
This study discusses the composite acoustic black hole (ABH) beam structure with low-frequency flexural wave attenuation properties. Band structures show that the proposed structure can overcome the limitation of conventional acoustic black holes, which cannot be applied at low frequency. By introducing an ethylene vinyl acetate (EVA) interlayer, the composite beam structure does not reveal the necessary low local stiffness or high stress concentration, vibration modes indicate that flexural wave attenuation still depends on the ABH. Furthermore, the size of the EVA material only affects the upper boundary of the second flexural bandgap but both boundaries of third flexural BG. Elastic constants of different materials have a great effect on the first three BGs. Vibration experiments prove the effect of the composite ABH beam and validate our results. This research has potential applications for controlling vibration propagation, and may be useful in low-frequency vibration filter design.
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影响因子:
3.7
作者:
Yan, Zhi-Zhong;Wang, Yue-Sheng
通讯作者:
Wang, Yue-Sheng
DOI:
10.1121/1.4976687
发表时间:
2016-08
期刊:
The Journal of the Acoustical Society of America
影响因子:
--
作者:
Jae Yeon Lee;W. Jeon
通讯作者:
Jae Yeon Lee;W. Jeon
影响因子:
4.7
作者:
Tang Liling;Cheng Li
通讯作者:
Cheng Li
影响因子:
4
作者:
Zhang, XD;Liu, ZY
通讯作者:
Liu, ZY
影响因子:
3.5
作者:
Tong Zhou;Liling Tang;Ji Hongli;Qiu Jinhao;Cheng Li
通讯作者:
Cheng Li