Inverse design of reconfigurable metabeams: Harnessing multi-wave coupling for tailored dispersion

IF 5 2区工程技术 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of The Mechanics and Physics of Solids Pub Date : 2025-04-16 DOI:10.1016/j.jmps.2025.106156

Jiao Wang , Bin Wu , Miao Yang , Wei Jiang , Nan Gao , Ronghao Bao , Weiqiu Chen

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Abstract

The roton-like dispersion has recently been realized in elastic metamaterials through the introduction of the nonlocal effect, which is facilitated by beyond-nearest-neighbor interactions. Here, we propose an innovative but simple reconfigurable structure composed of a rectangular beam integrated with an array of oblique quadrangular prisms. This design leverages structural symmetry to control wave coupling, enabling precise tuning of dispersion characteristics and the creation of extremum points (EPs). By manipulating the symmetry and coupling mechanisms, we can selectively design structures that promote the interaction of specific wave types, achieving targeted dispersion patterns. Through this inverse design approach, we can control the number and location of EPs, effectively customizing the dispersion profile to meet desired specifications, including the realization of maxon-like and roton-like dispersions. Comprehensive simulations and experimental validation have confirmed the feasibility of achieving high-precision control over the dispersion characteristics. This groundbreaking approach paves the way for advanced wave manipulation in elastic metamaterials.

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可重构元梁的逆向设计：利用多波耦合实现定制色散

通过引入非局域效应，最近在弹性超材料中实现了类转子色散，这种非局域效应是由超近邻相互作用促进的。在这里，我们提出了一种创新但简单的可重构结构，由矩形光束与斜四边形棱镜阵列集成组成。这种设计利用结构对称性来控制波耦合，从而精确调整色散特性和创建极值点（EPs）。通过操纵对称性和耦合机制，我们可以选择性地设计促进特定波类型相互作用的结构，从而实现目标色散模式。通过这种逆向设计方法，我们可以控制EPs的数量和位置，有效地定制分散轮廓，以满足所需的规格，包括实现像maxon和像roton一样的分散。综合仿真和实验验证证实了实现对色散特性高精度控制的可行性。这种突破性的方法为弹性超材料的高级波操纵铺平了道路。

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

Journal of The Mechanics and Physics of Solids 物理-材料科学：综合

CiteScore

9.80

自引率

9.40%

发文量

276

审稿时长

52 days

期刊介绍： The aim of Journal of The Mechanics and Physics of Solids is to publish research of the highest quality and of lasting significance on the mechanics of solids. The scope is broad, from fundamental concepts in mechanics to the analysis of novel phenomena and applications. Solids are interpreted broadly to include both hard and soft materials as well as natural and synthetic structures. The approach can be theoretical, experimental or computational.This research activity sits within engineering science and the allied areas of applied mathematics, materials science, bio-mechanics, applied physics, and geophysics. The Journal was founded in 1952 by Rodney Hill, who was its Editor-in-Chief until 1968. The topics of interest to the Journal evolve with developments in the subject but its basic ethos remains the same: to publish research of the highest quality relating to the mechanics of solids. Thus, emphasis is placed on the development of fundamental concepts of mechanics and novel applications of these concepts based on theoretical, experimental or computational approaches, drawing upon the various branches of engineering science and the allied areas within applied mathematics, materials science, structural engineering, applied physics, and geophysics. The main purpose of the Journal is to foster scientific understanding of the processes of deformation and mechanical failure of all solid materials, both technological and natural, and the connections between these processes and their underlying physical mechanisms. In this sense, the content of the Journal should reflect the current state of the discipline in analysis, experimental observation, and numerical simulation. In the interest of achieving this goal, authors are encouraged to consider the significance of their contributions for the field of mechanics and the implications of their results, in addition to describing the details of their work.