Vibration Energy Harvester (VEH) for a Free Body Moving in Space at Vibro Shock Mode

IF 0.6 4区 工程技术 Q4 MECHANICS
Mechanika Pub Date : 2022-06-21 DOI:10.5755/j02.mech.31034
R. Gaidys, Egidijus Stasytis, V. Daniulaitis, B. Narijauskaite
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引用次数: 2

Abstract

The type of the generator was chosen to be piezoelectric because it is most widely used to capture the energy of mechanical vibrations and convert it into electricity. A 2D generator model was chosen for the analysis of the dynamics of the energy harvester (VEH) for a free body moving in space at vibro shock mode. The computational schemes of the model are presented. A mathematical model describing the dynamics is developed: generator casing, inertial mass, nonlinear contact/impact. The mathematical model is implemented by the Runge-Kutta numerical method in the Matlab system. Analysis of experimental and modeling results is performed: comparison of generator eigen frequencies, the logarithmic decrement and the damping coefficient – the error is in range of 5%. This generator can be used to collect mechanical energy of water waves, wind, human movements, and other environmental factors in the presence of the body's free movement trajectory in space.
振动冲击模式下自由体空间运动的振动能量采集器
发电机的类型被选择为压电,因为它最广泛地用于捕获机械振动的能量并将其转化为电能。选取二维发电机模型,对空间运动自由体在振动冲击模式下的能量采集器(VEH)进行动力学分析。给出了模型的计算格式。建立了发电机机壳、惯性质量、非线性接触/冲击的动力学数学模型。数学模型在Matlab系统中采用龙格-库塔数值法实现。对实验结果和建模结果进行了分析:比较了发电机本征频率、对数衰减量和阻尼系数,误差在5%范围内。该发电机可用于收集人体在空间中自由运动轨迹存在的水波、风、人体运动等环境因素的机械能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Mechanika
Mechanika 物理-力学
CiteScore
1.30
自引率
0.00%
发文量
50
审稿时长
3 months
期刊介绍: The journal is publishing scientific papers dealing with the following problems: Mechanics of Solid Bodies; Mechanics of Fluids and Gases; Dynamics of Mechanical Systems; Design and Optimization of Mechanical Systems; Mechanical Technologies.
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