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首页> 外文会议>IEEE International Conference on Semiconductor Electronics >Vibration based T-shaped piezoelectric cantilever beam design using finite element method for energy harvesting devices
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Vibration based T-shaped piezoelectric cantilever beam design using finite element method for energy harvesting devices

机译：基于振动的T形压电悬臂梁的有限元方法设计，用于能量收集装置

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摘要

Ambient mechanical vibration energy can be converted into electrical energy using one of the most promising mechanism known as piezoelectric mechanism. In the mechanism, mechanical stress and strain generation in the piezoelectric materials can be converted into electrical energy which can be used for low power electronic devices. In this work, a T-shaped piezoelectric cantilever beam was analysed. The geometry of the cantilever beam was designed using SolidWorks. After that, the cantilever beam was simulated using Finite Element Method (FEM) in COMSOL Multiphysics. In the FEM simulation, the beam was kept under a vibration sources of 1g acceleration. As a result, maximum displacement at free end of the beam was found 2.47mm at resonant frequency of 238.75Hz. As piezoelectric energy harvesting from vibration depends on stress generation in piezoelectric materials, stress was analysed for the beam. The maximum amount of stress near the clamped end of the beam was found 2.39×108 N/m2 at resonance. The investigation showed that the designed and analysed T-shaped beam can be operated in low-frequency ambient vibration sources.
机译：可以使用一种最有前途的机制（称为压电机制）将周围的机械振动能转换为电能。在该机制中，压电材料中产生的机械应力和应变可转换为电能，可用于低功率电子设备。在这项工作中，分析了一个T形压电悬臂梁。悬臂梁的几何形状是使用SolidWorks设计的。之后，在COMSOL Multiphysics中使用有限元方法（FEM）模拟悬臂梁。在有限元模拟中，梁保持在加速度为1g的振动源下。结果，在238.75Hz的共振频率下，发现光束自由端的最大位移为2.47mm。由于从振动中收集压电能量取决于压电材料中产生的应力，因此对梁的应力进行了分析。共振时发现梁的受力端附近的最大应力为2.39×108 N / m2。研究表明，设计和分析的T形梁可以在低频环境振动源中运行。

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