Hydraulic metamaterial with tunable dynamic response

IF 7.1 1区工程技术 Q1 ENGINEERING, MECHANICAL International Journal of Mechanical Sciences Pub Date : 2025-02-12 DOI:10.1016/j.ijmecsci.2025.110058

Nan Li , Changqing Bai , Yufeng Ren , Hongyan Zhang

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Abstract

Metamaterials with programmable dynamic responses have captured significant attention in the field of advanced engineering structures owing to their ability to adapt across a wide range of frequencies. This work presents a metamaterial with tunable bandgaps, designed to enable diverse wave modulation. The proposed metamaterial exhibits elastic wave bandgaps based on the liquid–solid coupling effect, and its dynamic behaviour can be adjusted by varying external loads. Numerical studies explore the mechanism by which configuration variations regulate the tunable bandgap of the metamaterial. The bandgap tuning performance can be optimised through the design of the liquid domain, with its dispersion relationship modifiable by filling different liquids. Additionally, we investigate the directional propagation of elastic waves within the metamaterial. A dynamic test bench, equipped with adjustable external loads, is developed to experimentally verify the metamaterial's tunable bandgap. This tunable metamaterial is expected to find wide applications in advanced fields such as marine engineering and intelligent robotics.

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来源期刊

International Journal of Mechanical Sciences 工程技术-工程：机械

CiteScore

12.80

自引率

17.80%

发文量

769

审稿时长

19 days

期刊介绍： The International Journal of Mechanical Sciences (IJMS) serves as a global platform for the publication and dissemination of original research that contributes to a deeper scientific understanding of the fundamental disciplines within mechanical, civil, and material engineering. The primary focus of IJMS is to showcase innovative and ground-breaking work that utilizes analytical and computational modeling techniques, such as Finite Element Method (FEM), Boundary Element Method (BEM), and mesh-free methods, among others. These modeling methods are applied to diverse fields including rigid-body mechanics (e.g., dynamics, vibration, stability), structural mechanics, metal forming, advanced materials (e.g., metals, composites, cellular, smart) behavior and applications, impact mechanics, strain localization, and other nonlinear effects (e.g., large deflections, plasticity, fracture). Additionally, IJMS covers the realms of fluid mechanics (both external and internal flows), tribology, thermodynamics, and materials processing. These subjects collectively form the core of the journal's content. In summary, IJMS provides a prestigious platform for researchers to present their original contributions, shedding light on analytical and computational modeling methods in various areas of mechanical engineering, as well as exploring the behavior and application of advanced materials, fluid mechanics, thermodynamics, and materials processing.