Energy harvesting from vibrations of a beam under mass passage by arc-shaped auxetic cantilever beams

IF 4.4 2区工程技术 Q1 MECHANICS

European Journal of Mechanics A-Solids Pub Date : 2024-09-06 DOI:10.1016/j.euromechsol.2024.105432

Neda Mortazavi, Saeed Ziaei-Rad

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Abstract

This study explores energy harvesting from beam vibrations induced by the passage of various masses, including concentrated, distributed, unbalanced, and consecutive masses. The energy harvester incorporates an arc-shaped auxetic substrate with a re-entrant, missing rib, and double-arrowhead structure. The system is simulated under different base excitations due to harmonic excitation and a bridge-simulator midpoint vibration. The first part involves theoretical analysis and finite element (FE) simulation of moving masses on a beam. In the second part, a theoretical examination and FE simulation of cantilever piezoelectric energy harvesters with arc-shaped auxetic substrates are conducted. Theoretical relations for the Euler-Bernoulli (EB) beam are derived using the Wentzel-Kramers-Brillouin (WKB) method. The study reports a maximum output power of $1.29 μ W$ at an optimal resistance of $0.148 M Ω$ under bridge excitation with the passage of a distributed mass.

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利用弧形辅助悬臂梁从质量通过下的梁振动中采集能量

本研究探讨了通过各种质量（包括集中质量、分布质量、不平衡质量和连续质量）引起的梁振动进行能量收集的问题。能量收集器包含一个具有重心、缺棱和双箭头结构的弧形辅助基板。该系统在谐波激励和桥梁模拟器中点振动导致的不同基础激励下进行了模拟。第一部分涉及梁上移动质量的理论分析和有限元（FE）模拟。第二部分是对带有弧形辅助基板的悬臂压电能量收集器进行理论研究和有限元仿真。使用 Wentzel-Kramers-Brillouin (WKB) 方法推导出了欧拉-伯努利（EB）梁的理论关系。研究报告显示，在桥式激励下，通过分布式质量的最佳电阻为 0.148MΩ 时，最大输出功率为 1.29μW。

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

European Journal of Mechanics A-Solids 物理-力学

CiteScore

7.00

自引率

7.30%

发文量

275

审稿时长

48 days

期刊介绍： The European Journal of Mechanics endash; A/Solids continues to publish articles in English in all areas of Solid Mechanics from the physical and mathematical basis to materials engineering, technological applications and methods of modern computational mechanics, both pure and applied research.