Version 1
: Received: 22 August 2023 / Approved: 23 August 2023 / Online: 24 August 2023 (08:53:55 CEST)
How to cite:
Mohiuddin, M.; Ahmed, Z.; Ahmed, R. A Comprehensive Study to Select a Cost-Effective Beam Design for Maximizing Power Density in a Cantilever Beam-Based Energy Harvester. Preprints2023, 2023081733. https://doi.org/10.20944/preprints202308.1733.v1
Mohiuddin, M.; Ahmed, Z.; Ahmed, R. A Comprehensive Study to Select a Cost-Effective Beam Design for Maximizing Power Density in a Cantilever Beam-Based Energy Harvester. Preprints 2023, 2023081733. https://doi.org/10.20944/preprints202308.1733.v1
Mohiuddin, M.; Ahmed, Z.; Ahmed, R. A Comprehensive Study to Select a Cost-Effective Beam Design for Maximizing Power Density in a Cantilever Beam-Based Energy Harvester. Preprints2023, 2023081733. https://doi.org/10.20944/preprints202308.1733.v1
APA Style
Mohiuddin, M., Ahmed, Z., & Ahmed, R. (2023). A Comprehensive Study to Select a Cost-Effective Beam Design for Maximizing Power Density in a Cantilever Beam-Based Energy Harvester. Preprints. https://doi.org/10.20944/preprints202308.1733.v1
Chicago/Turabian Style
Mohiuddin, M., Zahir Ahmed and Riaz Ahmed. 2023 "A Comprehensive Study to Select a Cost-Effective Beam Design for Maximizing Power Density in a Cantilever Beam-Based Energy Harvester" Preprints. https://doi.org/10.20944/preprints202308.1733.v1
Abstract
Cantilever beams are the most widely used form of strain-driven energy harvesting, which uses piezoelectric materials. Although researchers are constantly seeking improved power output from cantilever-beam-driven piezoelectric energy harvesters, a systematic and fundamental analysis of the effect of beam geometry on the power capacity of energy harvesters warrants further investigation. Most of the previous research accounts for beams that are fully coated with piezoelectric material. While a larger coating area increases energy output, it also escalates costs as piezoelectric materials are very expensive. Considering the high cost of piezoelectric materials when dealing with limited piezoelectric material, enhancing power output can be achieved by employing a larger base beam and coating a portion of it at the fixed end. As such, the aim of this work is to investigate a wide variety of cantilever beam shapes (e.g., trapezoidal, triangular, V-cut, concave, and convex) with partial piezoelectric material coating on the base beam to maximize the power output capacity of the harvester. To ascertain a comparable argument, the surface area, volume, and mass of all the considered beam shapes are kept consistent, as these parameters influence the power output of the harvester. The geometry of each shape is systematically varied to understand the effect of geometric configuration on the output power density. Finally, the power capacities of all types of beams are compared, and a design is proposed to obtain the maximum power output. It was found that when the surface area of both the beam and piezoelectric material is kept constant and piezoelectric material is located at the fixed end, a trapezoidal beam with a smaller base width and larger free end width is the most efficient in generating power as long as the structural integrity is maintained. The finding is completely opposite as was suggested by previous studies, which proposed that a trapezoidal beam with a smaller free end yields higher output. Instead, this study demonstrates that an inverted trapezoidal beam produced higher output, considering partial coating compared to the full beam coating used in previous studies. Additionally, a correlation is presented on how the beam resonance frequency shifts with variation in beam parameters.
Keywords
Energy harvesting; Cantilever beam; Maximizing power output; Resonance frequency; Geometric configuration
Subject
Engineering, Mechanical Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
