Current Volume 6
In this work, piezoelectric cantilever energy harvesters with different materials of varying dimensions and shapes were studied. The simulations were carried out to predict the output voltage (V) across the piezoelectric layers for different piezoelectric materials and substrate materials with various shaped cantilever beams. A rectangular beam with dimension 30 mm x 5 mm x 0.16 mm, and a U-shaped beam with dimension 30 mm x 15 mm x 0.16mm in addition to an E-shaped beam with dimension 30 mm x 25 mm x 0.16 mm were examined. COMSOL Multiphysics 5.3 was used for simulation. The properties examined included; variation of the beam length and beam width concerning frequency. Also, the variation of eigen frequency with voltage was examined for the different cantilever structures. All the cantilever structures were studied at resonance frequency between 60 to 200Hz. It was observed that the E-shaped structure gave a maximum voltage of 8.792V at the eigen frequency of 0.032Hz with an applied force of 10N. The PZT 5A with Aluminum substrate demonstrates better performance in the context of voltage output and eigen frequency compared to other piezoelectric materials under study. For energy harvesting, the E-shaped cantilever structure using PZT-5A as a piezoelectric layer and Aluminum as a substrate layer gave the best result.
Energy harvesting, Piezoelectric, bimorph cantilever, FEM, COMSOL Multiphysics
Oluwafemi Olayebi "Modelling and Simulation of an Energy Harvester With Piezoelectric Material Using COMSOL Multiphysics 5.3" Iconic Research And Engineering Journals Volume 5 Issue 7 2022 Page 366-380
Oluwafemi Olayebi "Modelling and Simulation of an Energy Harvester With Piezoelectric Material Using COMSOL Multiphysics 5.3" Iconic Research And Engineering Journals, 5(7)