SHAPE DESIGN OPTIMIZATION OF UNIMORPH PIEZOELECTRICCANTILEVER ENERGY HARVESTER

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HOSSEINI ROUHOLAH; NOURI MARYAM

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Paper Information

Journal: THE JOURNAL OF COMPUTATIONAL APPLIED MECHANICS Year:2016 | Volume:47 | Issue:2 Page(s): 247-259

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Title

SHAPE DESIGN OPTIMIZATION OF UNIMORPH PIEZOELECTRICCANTILEVER ENERGY HARVESTER

Author(s)

HOSSEINI ROUHOLAH | NOURI MARYAM | Issue Writer Certificate

Keywords

VIBRATION ENERGY HARVESTING

UNIMORPH PIEZOELECTRIC VIBRATOR

TRAPEZOIDAL V-SHAPED CANTILEVER

TRIANGULAR BEAM

RESONANT FREQUENCY

Abstract

The most promising method for micro scale energy scavenging is via VIBRATION ENERGY HARVESTING which convertsmechanical energy to electrical energy. Using piezoelectric cantilevers is the most common method for vibrationenergy harvesting. Changing the shape of the cantilevers can lead to changing the generated output voltage and power. In this work VIBRATION ENERGY HARVESTING via piezoelectric resonant unimorph cantilevers is studied and new design forobtaining more efficient piezoelectric energy harvester is suggested. This study provides comprehensive analysis ofthe output voltage relationships and deducing a considerable precise rule of thumb for calculating resonance frequencyin cantilever-type unimorph piezoelectric energy harvesters using Rayleigh method. The analytical formula, is thenanalyzed and verified by FEM simulation in ABAQUS. The analytical data was found to be very close to simulationdata. A key finding is that among all the unimorph TRAPEZOIDAL V-SHAPED CANTILEVER beams with uniform thickness, thetriangular tapered cantilever, can lead to highest resonance frequency and by increasing the ratio of the trapezoidalbases, the resonance frequency decreases. These new findings provide guidelines on system parameters that can bemanipulated for more efficient performance in different ambient source conditions.

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APA: Copy

HOSSEINI, ROUHOLAH, & NOURI, MARYAM. (2016). SHAPE DESIGN OPTIMIZATION OF UNIMORPH PIEZOELECTRICCANTILEVER ENERGY HARVESTER. THE JOURNAL OF COMPUTATIONAL APPLIED MECHANICS, 47(2), 247-259. SID. https://sid.ir/paper/301786/en

Vancouver: Copy

HOSSEINI ROUHOLAH, NOURI MARYAM. SHAPE DESIGN OPTIMIZATION OF UNIMORPH PIEZOELECTRICCANTILEVER ENERGY HARVESTER. THE JOURNAL OF COMPUTATIONAL APPLIED MECHANICS[Internet]. 2016;47(2):247-259. Available from: https://sid.ir/paper/301786/en

IEEE: Copy

ROUHOLAH HOSSEINI, and MARYAM NOURI, “SHAPE DESIGN OPTIMIZATION OF UNIMORPH PIEZOELECTRICCANTILEVER ENERGY HARVESTER,” THE JOURNAL OF COMPUTATIONAL APPLIED MECHANICS, vol. 47, no. 2, pp. 247–259, 2016, [Online]. Available: https://sid.ir/paper/301786/en

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