To achieve multiple closely spaced natural frequencies in the low-frequency range of
piezoelectric energy harvester, a novel three-dimensional braided multi-modal
piezoelectric energy harvester (BMPEH) is proposed. The 3D BMPEH is
composed of a main beam with piezoelectric layers and multiple branch
beams equipped with tip masses. The main beam and the branch beams are
employed as the elastic layers, and are made of 3D braided composites with
excellent mechanical properties and good design flexibility. The theoretical
model of the 3D BMPEH under transverse excitation is established, and the
electromechanical coupling equation is derived. The effects of design parameters,
including braided angle, tip mass, load resistance, and excitation amplitude,
on the output response are examined. Numerical simulations demonstrate
that the 3D BMPEH broadens the bandwidth of frequency response in the
lower frequency range and shows great potential for powering electronic
equipment.
PDF Access Denied
We have not been able to recognize your IP address
216.73.216.33
as that of a subscriber to this journal.
Online access to the content of recent issues is by
subscription, or purchase of single articles.
Please contact your institution's librarian suggesting a subscription, for example by using our
journal-recommendation form.
Or, visit our
subscription page
for instructions on purchasing a subscription.