TY - GEN
T1 - Enhancement of piezoelectric energy harvesting using ABH structural tailoring
AU - Liang, Yukun
AU - Ji, Hongli
AU - Qiu, Jinhao
AU - Cheng, Li
AU - Wu, Yipeng
AU - Zhang, Chao
PY - 2018/8/30
Y1 - 2018/8/30
N2 - The acoustic black hole (ABH) in thin-walled structures allows the reduction of phase velocity of flexural waves, producing high energy density within structural areas which offers excellent potential for vibration based energy harvesting. The broadband characteristic of the ABH effect is beneficial to increase the operational frequency range of vibration energy harvesters. In this paper, finite element models of a beam with embedded ABHs and its full coupling with piezo-transducers bonded on its surface are analyzed. The size of piezoelectric patches is designed to be relatively smaller than the wavelengths of ABH features in order to make sure that the positive and negative electric charge generated on the surface of harvesters won't be neutralized. The performances of energy harvesters in the ABH structure are investigated and compared with those of the uniform beam under steady state in numerical simulations. The results show that the ABH features are much more effective for vibration energy harvesting than conventional uniform structures.
AB - The acoustic black hole (ABH) in thin-walled structures allows the reduction of phase velocity of flexural waves, producing high energy density within structural areas which offers excellent potential for vibration based energy harvesting. The broadband characteristic of the ABH effect is beneficial to increase the operational frequency range of vibration energy harvesters. In this paper, finite element models of a beam with embedded ABHs and its full coupling with piezo-transducers bonded on its surface are analyzed. The size of piezoelectric patches is designed to be relatively smaller than the wavelengths of ABH features in order to make sure that the positive and negative electric charge generated on the surface of harvesters won't be neutralized. The performances of energy harvesters in the ABH structure are investigated and compared with those of the uniform beam under steady state in numerical simulations. The results show that the ABH features are much more effective for vibration energy harvesting than conventional uniform structures.
UR - http://www.scopus.com/inward/record.url?scp=85053894353&partnerID=8YFLogxK
U2 - 10.1109/AIM.2018.8452224
DO - 10.1109/AIM.2018.8452224
M3 - Conference article published in proceeding or book
AN - SCOPUS:85053894353
SN - 9781538618547
T3 - IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM
SP - 1372
EP - 1377
BT - AIM 2018 - IEEE/ASME International Conference on Advanced Intelligent Mechatronics
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM 2018
Y2 - 9 July 2018 through 12 July 2018
ER -