Design and evaluation of dual-resonant aggregates metaconcrete

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2023-03-27 DOI:10.1590/1679-78257392

En-Yong Zhang, Haixia Zhao, Guoyun Lu, Pengcheng Chen, Huiwei Yang

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引用次数: 2

Abstract

Metaconcrete is a newly manmade concrete where traditional aggregates are partially replaced by resonant aggregates. The metaconcrete slab can attenuate vibration in the specific frequency bandgap which are created by the locally resonant aggregates. To enhance the attenuation performance of metaconcrete slab, a dual-resonant aggregate was designed and embedded into the metaconcrete slab. Firstly, a mass-in-(mass-in-mass) analytical model is used to predict the bandgap characteristics of dual-resonant aggregates metaconcrete. Then, eigenfrequency investigation is conducted to acquire the dispersion curve of the periodic unit cell by using finite element software COMSOL Multiphysics. The effects of the mass and stiffness ratios parameters on the characteristics of bandgap are studied. The frequency responses of the dual-resonant aggregates metaconcrete reveal that the dual-resonant aggregates metaconcrete slab can acquire vibration wave mitigation in two designed frequency bands. The results offer a base for the optimal design of the metaconcrete slab for structural protections resist vibration loading.

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双共振骨料混凝土设计与评价

元混凝土是一种新型的人造混凝土，传统的骨料部分被共振骨料取代。超混凝土楼板能在特定频率带隙内衰减由集料局部共振产生的振动。为了提高meta混凝土板的衰减性能，设计了双共振骨料并嵌入meta混凝土板中。首先，采用质量-质量-质量分析模型对双共振骨料元混凝土的带隙特性进行了预测。然后，利用有限元软件COMSOL Multiphysics进行特征频率研究，获得周期单元胞的色散曲线。研究了质量比和刚度比参数对带隙特性的影响。双共振骨料混凝土面板的频率响应表明，双共振骨料混凝土面板在两个设计频带内均能实现振动波的抑制。研究结果为结构保护板抗振动荷载的优化设计提供了依据。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.