Research Article
Design, Modeling, and Simulation of Two-Piece Trapezoidal Piezoelectric Devices for Sensing and Energy Harvesting
Figure 5
Electric power output vs. vibration frequency of the first trapezoidal bimorph two-piece design (a). Voltage vs. vibration frequency of the first trapezoidal bimorph two-piece design (b). W1 is 40 mm, and W2 is 18 mm. The full-width half-maximum is 2.5 Hz. The quality factor is 28. The structure loss factor is 0.025. The damping ratio is 0.017. The optimal resistance is 0.08 MΩ. The length of the beam L is 60 mm, the thickness of Tpiezo is 0.3 mm, and the thickness of the brass layer Ts is 0.05 mm.
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| (b) |