Study the Effect of Tapering on the Nonlinear Behavior of an Exponentially Varying Width Piezoelectric Energy Harvester
| Autor: | Hamed Salmani, Gholamhossein Rahimi |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Steady state (electronics) General Engineering Equations of motion Tapering 02 engineering and technology Mechanics 021001 nanoscience & nanotechnology 01 natural sciences Piezoelectricity Vibration Nonlinear system Normal mode 0103 physical sciences 0210 nano-technology 010301 acoustics Energy harvesting |
| Zdroj: | Journal of Vibration and Acoustics. 140 |
| ISSN: | 1528-8927 1048-9002 |
| DOI: | 10.1115/1.4039932 |
| Popis: | It has been shown that exponentially tapering the width of a vibration-based piezoelectric energy harvester will result in increasing electric power per mass in a specified frequency. In this paper, a nonlinear solution of an exponentially decreasing width piezoelectric energy harvester is presented. Piezoelectric, inertial, and geometric nonlinearities are included in the presented model, while the exponentially tapered piezoelectric beam's mass normalized mode shapes are utilized in Galerkin discretization. The developed nonlinear coupled equations of motion are solved using method of multiple scales (MMS), and the steady states results are verified by experiment in high amplitude excitation. Finally, the exponentially tapering parameter effect is studied, and it is concluded that the voltage per mass of the energy harvester is improved by tapering at high exciting acceleration amplitudes. |
| Databáze: | OpenAIRE |
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