TY - GEN
T1 - Vibration energy harvesting using multi-stable two degree-offreedom nonlinear dynamics
AU - Wu, Z.
AU - Harne, R. L.
AU - Wang, K. W.
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - In this research, we studied the integrated dynamics of a coupled linear oscillator-bistable energy harvester system. The method of harmonic balance together with perturbation analysis are used to predict the existence and stability of the bistable device interwell vibration. The influences of important parameters on tailoring the coupled system response are investigated to determine principles for improved energy harvesting performance. We demonstrate analytically that for excitation frequencies in a bandwidth less than the natural frequency of the linear oscillator, the additional linear system may substantially intensify the bistable harvester power generation as compared to a single bistable device. Moreover, the linear-bistable coupled system may introduce a stable outof-phase dynamic between the linear and bistable elements around the resonance of the linear oscillator, enhancing the performance of the harvester by providing for a second interwell response. Key analytical findings are confirmed through experiments, validating the predicted trends and demonstrating the advantages of the coupled system for energy harvesting.
AB - In this research, we studied the integrated dynamics of a coupled linear oscillator-bistable energy harvester system. The method of harmonic balance together with perturbation analysis are used to predict the existence and stability of the bistable device interwell vibration. The influences of important parameters on tailoring the coupled system response are investigated to determine principles for improved energy harvesting performance. We demonstrate analytically that for excitation frequencies in a bandwidth less than the natural frequency of the linear oscillator, the additional linear system may substantially intensify the bistable harvester power generation as compared to a single bistable device. Moreover, the linear-bistable coupled system may introduce a stable outof-phase dynamic between the linear and bistable elements around the resonance of the linear oscillator, enhancing the performance of the harvester by providing for a second interwell response. Key analytical findings are confirmed through experiments, validating the predicted trends and demonstrating the advantages of the coupled system for energy harvesting.
UR - http://www.scopus.com/inward/record.url?scp=84896913611&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84896913611&partnerID=8YFLogxK
U2 - 10.1115/DETC2013-12459
DO - 10.1115/DETC2013-12459
M3 - Conference contribution
AN - SCOPUS:84896913611
SN - 9780791855997
T3 - Proceedings of the ASME Design Engineering Technical Conference
BT - 22nd Reliability, Stress Analysis, and Failure Prevention Conference; 25th Conference on Mechanical Vibration and Noise
PB - American Society of Mechanical Engineers
T2 - ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2013
Y2 - 4 August 2013 through 7 August 2013
ER -