Nonlinear analysis and response identification of tristable energy harvesters under wind and base excitations

IF 2.8 3区工程技术 Q2 MECHANICS

International Journal of Non-Linear Mechanics Pub Date : 2025-02-16 DOI:10.1016/j.ijnonlinmec.2025.105052

Xiaoqing Ma , He Ma , Shengxi Zhou

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引用次数: 0

Abstract

The excellent working performance of nonlinear vortex-induced vibration (VIV) energy harvesters has been verified by researchers. However, in practical working environments, the harvester is not only affected by wind excitation but also by base excitation. Analyzing the impact mechanism of base excitation on the nonlinear harvesters' working performance is very important for designing wind energy harvesters with high energy harvesting efficiency and strong robustness. This paper designs a VIV energy harvester based on the tristable structure, and the frequency spectrum, Poincaré maps, and phase diagrams are adopted to characterize the harvester's output response and dynamic characteristics. It is found that base excitation can adjust the working performance of the harvester. In addition, the complex response characteristics (chaotic, periodic and quasi-periodic responses) of the harvester is accurately identified by the analysis method of “0–1” test, and the parameter analysis are carried out. Overall, this paper provides theoretical framework for analyzing tristable VIV energy harvesters subjected to complex excitations.

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三稳能量采集器在风和基激励下的非线性分析与响应辨识

非线性涡激振动（VIV）能量采集器的优异工作性能已被研究人员证实。然而，在实际工作环境中，收割机不仅受到风励磁的影响，还受到基座励磁的影响。分析基础激励对非线性风力收割机工作性能的影响机理，对于设计高能量收集效率和强鲁棒性的风力收割机具有重要意义。本文设计了一种基于三稳结构的涡激振动能量采集器，采用频谱图、庞加莱图和相位图来表征采集器的输出响应和动态特性。研究发现，基础励磁可以调节收割机的工作性能。此外，采用“0-1”试验的分析方法，对收割机的复杂响应特性（混沌、周期和准周期响应）进行了准确识别，并进行了参数分析。总的来说，本文为分析受复杂激励的三稳态VIV能量收集器提供了理论框架。

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

International Journal of Non-Linear Mechanics 物理-力学

CiteScore

5.50

自引率

9.40%

发文量

192

审稿时长

67 days

期刊介绍： The International Journal of Non-Linear Mechanics provides a specific medium for dissemination of high-quality research results in the various areas of theoretical, applied, and experimental mechanics of solids, fluids, structures, and systems where the phenomena are inherently non-linear. The journal brings together original results in non-linear problems in elasticity, plasticity, dynamics, vibrations, wave-propagation, rheology, fluid-structure interaction systems, stability, biomechanics, micro- and nano-structures, materials, metamaterials, and in other diverse areas. Papers may be analytical, computational or experimental in nature. Treatments of non-linear differential equations wherein solutions and properties of solutions are emphasized but physical aspects are not adequately relevant, will not be considered for possible publication. Both deterministic and stochastic approaches are fostered. Contributions pertaining to both established and emerging fields are encouraged.