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Effects of geometric and material parameters on band-gaps of piezoelectric vibration energy harvesting plate with local resonators

Effects of geometric and material parameters on band-gaps of piezoelectric vibration energy harvesting plate with local resonators
Effects of geometric and material parameters on band-gaps of piezoelectric vibration energy harvesting plate with local resonators
Continuously powering wireless sensor nodes (WSNs) has been one key problem in structural health monitoring. Piezoelectric energy harvesting (PEH) from environmental vibrations has been a potential way to make low power consumption WSNs self-powered. One kind of vibration energy harvesting plate with local resonators embedded in piezoelectric patches is presented in this paper. Due to its distinct dynamic performances: band gaps, we can control wave propagating for the purpose of broad band vibration harvesting and higher energy conversion efficiency. Distributions and characteristics of band gaps are affected by geometric and material parameters, thus it's necessary to analyze the effects of these key parameters. In this paper, a theoretical calculation method of vibration propagation characteristics is developed based on finite element method (FEM) and the Floquet-Bloch theorem. Then finite element simulations using Comsol software are done to analyze the effects of different parameters. The results show that we can reduce the beginning frequency of the lowest band gap by increasing the length of resonators, while broadening band gaps by raising the filling ratio of the piezoelectric patches. On the other hand, Young modulus is the main factor of material parameters which markedly affects the beginning and cutoff frequency. The results provide useful theoretical guidelines for optimally designing vibration energy harvesting plates in applications.
piezoelectric energy harvesting; local resonator; band gaps; FEM;Floquet-Bloch theorem
2166-5656
IEEE
Liu, Ziniu
4470d401-aaae-4962-b297-1869f70edec4
Chen, Zhongsheng
9893f775-a26a-4ebe-a4d9-d8224838fc9d
Zhang, Fan
22a0ac7a-2068-4eef-a441-c8efb8f24ed0
Xiong, Yeping
51be8714-186e-4d2f-8e03-f44c428a4a49
Liu, Ziniu
4470d401-aaae-4962-b297-1869f70edec4
Chen, Zhongsheng
9893f775-a26a-4ebe-a4d9-d8224838fc9d
Zhang, Fan
22a0ac7a-2068-4eef-a441-c8efb8f24ed0
Xiong, Yeping
51be8714-186e-4d2f-8e03-f44c428a4a49

Liu, Ziniu, Chen, Zhongsheng, Zhang, Fan and Xiong, Yeping (2017) Effects of geometric and material parameters on band-gaps of piezoelectric vibration energy harvesting plate with local resonators. In 2017 Prognostics and System Health Management Conference (PHM-Harbin). IEEE. 6 pp . (doi:10.1109/PHM.2017.8079153).

Record type: Conference or Workshop Item (Paper)

Abstract

Continuously powering wireless sensor nodes (WSNs) has been one key problem in structural health monitoring. Piezoelectric energy harvesting (PEH) from environmental vibrations has been a potential way to make low power consumption WSNs self-powered. One kind of vibration energy harvesting plate with local resonators embedded in piezoelectric patches is presented in this paper. Due to its distinct dynamic performances: band gaps, we can control wave propagating for the purpose of broad band vibration harvesting and higher energy conversion efficiency. Distributions and characteristics of band gaps are affected by geometric and material parameters, thus it's necessary to analyze the effects of these key parameters. In this paper, a theoretical calculation method of vibration propagation characteristics is developed based on finite element method (FEM) and the Floquet-Bloch theorem. Then finite element simulations using Comsol software are done to analyze the effects of different parameters. The results show that we can reduce the beginning frequency of the lowest band gap by increasing the length of resonators, while broadening band gaps by raising the filling ratio of the piezoelectric patches. On the other hand, Young modulus is the main factor of material parameters which markedly affects the beginning and cutoff frequency. The results provide useful theoretical guidelines for optimally designing vibration energy harvesting plates in applications.

Text
ChenZS YPX EH IEEE17 - Accepted Manuscript
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More information

Accepted/In Press date: 15 April 2017
Published date: 23 October 2017
Venue - Dates: IEEE 2017 Prognostics and System Health Management Conference, China, 2017-07-09 - 2017-07-12
Keywords: piezoelectric energy harvesting; local resonator; band gaps; FEM;Floquet-Bloch theorem

Identifiers

Local EPrints ID: 415270
URI: http://eprints.soton.ac.uk/id/eprint/415270
ISSN: 2166-5656
PURE UUID: 2842fbe1-d2a7-4732-b811-3815af82cb22
ORCID for Yeping Xiong: ORCID iD orcid.org/0000-0002-0135-8464

Catalogue record

Date deposited: 06 Nov 2017 17:30
Last modified: 07 Oct 2020 04:16

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