A quasi-zero-stiffness metastructure for concurrent low-frequency vibration attenuation and energy harvesting

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-04-25 DOI:10.1016/j.tws.2025.113371

Yaoqiang Shu , Kai Wang , Tingting Chen , Hongbing Pan , Yiping Deng , Hanfeng Yin , Jiaxi Zhou

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引用次数: 0

Abstract

Metastructures have been extensively studied for vibration attenuation, wave manipulation, and energy conversion. However, achieving simultaneous vibration attenuation and energy harvesting in low-frequency and ultra-low-frequency regimes remains challenging due to limitations in conventional designs. This study proposes a novel dual-functional quasi-zero-stiffness (QZS) metastructure that integrates low-frequency bandgap generation and piezoelectric energy conversion using polyvinylidene fluoride (PVDF) films. The metastructure is optimized for low-frequency, low- amplitude conditions typical in engineering applications. A nonlinear electromechanical coupling model is developed to describe its dynamic and electrical behaviors, with governing equations solved numerically using the fourth-order Runge-Kutta method and validated via finite element simulations. Parametric studies investigate the influence of key design parameters on vibration attenuation and energy harvesting performance. Results demonstrate that the QZS metastructure effectively suppresses low-frequency vibrations while achieving efficient energy conversion, leveraging its unique combination of bandgap formation and piezoelectric mechanisms. This work provides valuable insights into the development of advanced metastructures for low-frequency vibration control and energy harvesting in practical applications.

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一种低频振动衰减与能量收集的准零刚度元结构

元结构在振动衰减、波操纵和能量转换方面得到了广泛的研究。然而，由于传统设计的局限性，在低频和超低频条件下实现同时振动衰减和能量收集仍然具有挑战性。本研究提出了一种新的双功能准零刚度（QZS）元结构，该结构利用聚偏氟乙烯（PVDF）薄膜集成了低频带隙产生和压电能量转换。该元结构针对工程应用中典型的低频、低振幅条件进行了优化。采用四阶龙格-库塔法对控制方程进行了数值求解，并通过有限元仿真验证了控制方程的正确性。参数化研究探讨了关键设计参数对振动衰减和能量收集性能的影响。结果表明，QZS元结构利用其独特的带隙形成和压电机制的组合，有效地抑制了低频振动，同时实现了高效的能量转换。这项工作为实际应用中低频振动控制和能量收集的先进元结构的发展提供了有价值的见解。

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

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.