Publication: Fem analysis of different shapes and structurl parameters for piezoelectric cantilever beam
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Date
2023-07-14
Authors
Ali Rajaie bin Mohammad Suhaimi
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Abstract
This study focuses on the performance of piezoelectric energy harvesters through the analysis of geometric designs and dimensional parameters using Finite Element Analysis (FEA) in ANSYS software. The aim is to enhance the performance and efficiency of these energy harvesters by investigating the impact of different beam designs on the output voltage. The research methodology involves designing the piezoelectric beam, performing modal analysis and voltage generation analysis. The research analyzes the impact of dimensional variations of T and I-shaped piezoelectric cantilever beams on the output voltage and validates the simulation results through comparison with the reference beam design, which is the 4-faces trapezoidal beam. The research scope focuses on simulation-based analysis using ANSYS finite element techniques. The design process involves creating 3D models of the T and I-shaped beams in Solidworks, ensuring consistent volume across different designs. Modal analysis is performed to determine the natural frequencies and mode shapes of the beams, while voltage generation analysis investigates the output voltage under specific conditions. The simulation results reveal interesting trends in the output voltage and resonance frequency for the different beam designs. The T-shaped beam exhibits an inverse relationship between width and output voltage, with a decrease in voltage as the width increases. In contrast, the I-shaped beam shows a positive correlation between width and output voltage, indicating that wider beams result in higher output voltages. The best design is identified as the I-shaped beam with a width of 1.4mm, which demonstrates the highest output voltage of 195.9V and a resonance frequency of 1400Hz. This design shows promise for applications requiring efficient energy conversion in small electronic devices.