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Piezoelectric energy harvester
Posted 2013年9月30日 GMT-4 00:47 MEMS & Nanotechnology, MEMS & Piezoelectric Devices, Modeling Tools & Definitions, Parameters, Variables, & Functions, Structural Mechanics Version 4.3b 1 Reply
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I'm designing a very basic piezoelectric energy harvester. I apply an acceelration to the frame, which should cause the piezo to vibrate and generate micro volts of electrcity.
-Geometry
I have an aluminium frame (dimensions: 200x200x100mm)
a PZT-5A piezoelectric device (0.2x10x100mm) extruding in the middle of the frame.
-Physics
The frame assigned solid mechanics. With a prescribed acceleration of 10m/s^s acting in the x-direction
The piezo has a fixed constraint at the base (attached to the frame)
-Study
Frequency domain - 2.243Hz
PROBLEM
Most of the time the frame moves independently and the piezo remains stationary and does not move with the frame.
The times it does moves, i get no vibrations at all.
Do you have any suggestions on how to fix what i'm doing wrong or a change in design? Any help would be useful! Thank you
Hello Alifiya F
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