TY - GEN
T1 - Study on energy focusing effect of two-dimensional acoustic black hole on flexural waves in composite plate structures
AU - Yuan, Jiakai
AU - Liu, Xiandong
AU - Liu, Yuting
AU - Shan, Yingchun
AU - He, Tian
N1 - Publisher Copyright:
© INTER-NOISE 2019 MADRID - 48th International Congress and Exhibition on Noise Control Engineering. All Rights Reserved.
PY - 2019
Y1 - 2019
N2 - The acoustic black hole (ABH) effect can produce the area with high energy density in plate structure, which is beneficial for setting the damping material to attenuate the vibration and noise of the structure. In order to study the energy focusing effect arising from ABH on flexural waves in composite plate structures, in this paper, different structures with embedded single ABH and ABH array are designed. And the propagation characteristics of energy in composite plate structures with embedded ABH are investigated by using the vibration power flow method at low and mid frequencies. To visualize the power flow of the flexural waves in structures, the data of stress and displacement in plates are extracted from the commercial simulation software, and programs are written to calculate the power flow. The energy focusing effect of two-dimensional ABH on flexural waves at low and mid frequencies in composite plate structures is analysed and compared with the energy focusing effect of ABH on flexural waves in metal plate structures.
AB - The acoustic black hole (ABH) effect can produce the area with high energy density in plate structure, which is beneficial for setting the damping material to attenuate the vibration and noise of the structure. In order to study the energy focusing effect arising from ABH on flexural waves in composite plate structures, in this paper, different structures with embedded single ABH and ABH array are designed. And the propagation characteristics of energy in composite plate structures with embedded ABH are investigated by using the vibration power flow method at low and mid frequencies. To visualize the power flow of the flexural waves in structures, the data of stress and displacement in plates are extracted from the commercial simulation software, and programs are written to calculate the power flow. The energy focusing effect of two-dimensional ABH on flexural waves at low and mid frequencies in composite plate structures is analysed and compared with the energy focusing effect of ABH on flexural waves in metal plate structures.
KW - Acoustic black hole
KW - Composite
KW - Energy focalization
UR - https://www.scopus.com/pages/publications/85084164619
M3 - 会议稿件
AN - SCOPUS:85084164619
T3 - INTER-NOISE 2019 MADRID - 48th International Congress and Exhibition on Noise Control Engineering
BT - INTER-NOISE 2019 MADRID - 48th International Congress and Exhibition on Noise Control Engineering
A2 - Calvo-Manzano, Antonio
A2 - Delgado, Ana
A2 - Perez-Lopez, Antonio
A2 - Santiago, Jose Salvador
PB - SOCIEDAD ESPANOLA DE ACUSTICA - Spanish Acoustical Society, SEA
T2 - 48th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2019 MADRID
Y2 - 16 June 2019 through 19 June 2019
ER -