Show simple item record

contributor authorXiong, Xingyu
contributor authorOlutunde Oyadiji, S.
date accessioned2017-05-09T01:25:03Z
date available2017-05-09T01:25:03Z
date issued2015
identifier issn1048-9002
identifier othervib_137_03_031014.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/160050
description abstractTwolayer piezoelectric vibration energy harvesters using convergent and divergent tapered structures have been developed for broadband power output. The harvesters consist of a base cantilevered beam, which is attached to an upper beam by a spacer to develop a twolayer configuration. Two masses are attached to each layer to tune the resonance frequencies of each harvester and one of these masses also serves as the spacer. By varying the positions of the masses, the convergent and divergent tapered harvesters can generate close resonance frequencies and considerable power output in the first two modes. A broadband harvester design strategy is introduced based on a modal approach, which determines the modal performance using mass ratio and modal electromechanical coupling coefficient (EMCC). The required modal parameters are derived using the finite element method. Mass ratio represents the influence of the modal mechanical behavior on the power density directly. Since the dominant mode causes the remaining modes to have smaller mass ratios, smaller EMCC, and poor performance, the design strategy involves the selection of the harvester configurations with close resonances and favorable values of mass ratio initially, and deriving the EMCC and power density of those selected configurations.
publisherThe American Society of Mechanical Engineers (ASME)
titleTapered Two Layer Broadband Vibration Energy Harvesters
typeJournal Paper
journal volume137
journal issue3
journal titleJournal of Vibration and Acoustics
identifier doi10.1115/1.4029385
journal fristpage31014
journal lastpage31014
identifier eissn1528-8927
treeJournal of Vibration and Acoustics:;2015:;volume( 137 ):;issue: 003
contenttypeFulltext


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record