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Energy Harvesting & Design Optimization Lab. |
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University
of Maryland Baltimore County, Dept. of Mechanical Engineering |
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Current Topics
1.
Vibration Energy Harvester toward Broadband/Multimodal Capability:
Vibration energy harvesting (EH) has been initiated
from linear vibration principle, which utilizes a single frequency to obtain
power. Unfortunately, linear energy harvesters do not yield appreciable power
because of random nature of vibration in the real world. In order to overcome
the weakness of linear harvesters and account for the arbitrary nature of
vibration, multiple nonlinear vibration energy harvesters have been developed
and studied. This research presents parametric study on the design of
nonlinear vibration EH device that utilizes snap-through mechanism to obtain
high power from broadband excitation frequency. The device is comprised of a
cantilever beam with curved shell implemented in the middle of the beam. When
vibrating, the curved shell causes snap-through buckling and the nature of
vibration becomes nonlinear. For practical purposes, a broadband frequency
vibration input is used to optimize the energy harvester design. Design
variables are assigned and optimized in order to create optimal design of the
energy harvester, which maximizes power output. The presented design will
have positive effect by providing means to practically capturing wasted
vibration energy in consideration of its broadband frequency utilization.
EDLab performs researches on vibration energy harvester (including piezoelectric and electromagnetic) with consideration of realistic loading (e.g. tire impact loading, bimodal vibration from railroad, various kinetic energy from large scale structures and human).
. Sponsors:
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Energy Harvesting & Design Optimization
Lab. University of Maryland Baltimore County,
Dept. of Mechanical Engineering 1000 Hilltop Circle, Baltimore, MD, 21250 © 2013 |
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