Dynamics and performance evaluation of a self-tuning multistable shape memory energy harvester

Multistable energy harvesting has been extensively developed to scavenge energy from mechanical oscillations. Hence, the current multistable harvester only has a fixed device which cannot adapt to changing circumstanced incentives. Therefore, it does not operate well under the wide region of externa...

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Bibliographic Details
Published in:European physical journal plus 2021-05, Vol.136 (5), p.595, Article 595
Main Authors: Jiang, Wen-An, Ma, Xin-Dong, Liu, Mao, Han, Meng, Chen, Li-Qun, Bi, Qin-Sheng
Format: Article
Language:English
Subjects:
Applied and Technical Physics
Atomic
Behavior
Circuits
Complex Systems
Composite materials
Condensed Matter Physics
Energy
Energy harvesting
Equilibrium
Excitation
Mathematical and Computational Physics
Molecular
Optical and Plasma Physics
Performance evaluation
Physics
Physics and Astronomy
Polynomials
Regular Article
Self tuning
Shape memory
Temperature
Theoretical
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Summary:Multistable energy harvesting has been extensively developed to scavenge energy from mechanical oscillations. Hence, the current multistable harvester only has a fixed device which cannot adapt to changing circumstanced incentives. Therefore, it does not operate well under the wide region of external excitations frequencies in variable complex environments. To overcome the vital issue, in this paper we explored a novel energy harvester with shape memory to collect energy induced by the excitation with variational frequency, which possess the characteristic of multistable nonlinear restoring force. The nonlinear restoring force is represented by using a polynomial model with variational temperature, which can adapt to variational circumstance. The static and dynamic behaviors of the harvester are analyzed. It is shown that the shape memory energy harvester has three configurations at different temperatures, namely monostable, bistable and tristable. The three categories of harvesters are characterized by the form of their potential function. The captured performance of the presented energy harvester under three different types is contrasted; the results revealed that bistability can be applied to enhance the steady-state bandwidth considerably. Furthermore, the effect of circuit parameters on the scavenged voltage and power is discussed.
ISSN:2190-5444
2190-5444
DOI:10.1140/epjp/s13360-021-01579-6