{"title":"瑞利波衰减的地震超材料:土埋水箱超屏障的新概念","authors":"Andrea Francesco Russillo, Giuseppe Failla","doi":"10.1016/j.ijsolstr.2025.113656","DOIUrl":null,"url":null,"abstract":"<div><div>In the context of ongoing research on seismic metamaterials, this paper proposes a novel metabarrier for seismic Rayleigh wave attenuation, conceived as a periodic array of soil-embedded cylindrical water tanks acting as resonant units below the soil surface. A theoretical framework is developed, where the dynamics of the water tank is treated by a classical 3D linear, pressure-based model for fluid-structure interaction under earthquake and the soil is idealized as homogeneous and isotropic medium, in agreement with similar studies on seismic metamaterials. The dispersion diagram obtained from the Floquet–Bloch dispersion analysis exhibits relevant band gaps in the low frequency range of seismic Rayleigh waves, as well as in the higher frequency range of Rayleigh waves caused by other ground vibration sources as, e.g., railway or road traffic. Frequency-domain analyses of a soil domain with a finite array of water tanks validate the band gaps and show considerable attenuation. An appealing feature of the proposed metabarrier is that the water-tank resonant units can be tuned by varying the water level; indeed, it is shown that, in this manner, opening frequencies and sizes of the band gaps can be changed. This is a remarkable advantage over alternative seismic metamaterials that, in general, are not designed to be tunable. All calculations are implemented in COMSOL Multiphysics.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"324 ","pages":"Article 113656"},"PeriodicalIF":3.8000,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Seismic metamaterials for Rayleigh wave attenuation: A novel concept of soil-embedded water-tank metabarrier\",\"authors\":\"Andrea Francesco Russillo, Giuseppe Failla\",\"doi\":\"10.1016/j.ijsolstr.2025.113656\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>In the context of ongoing research on seismic metamaterials, this paper proposes a novel metabarrier for seismic Rayleigh wave attenuation, conceived as a periodic array of soil-embedded cylindrical water tanks acting as resonant units below the soil surface. A theoretical framework is developed, where the dynamics of the water tank is treated by a classical 3D linear, pressure-based model for fluid-structure interaction under earthquake and the soil is idealized as homogeneous and isotropic medium, in agreement with similar studies on seismic metamaterials. The dispersion diagram obtained from the Floquet–Bloch dispersion analysis exhibits relevant band gaps in the low frequency range of seismic Rayleigh waves, as well as in the higher frequency range of Rayleigh waves caused by other ground vibration sources as, e.g., railway or road traffic. Frequency-domain analyses of a soil domain with a finite array of water tanks validate the band gaps and show considerable attenuation. An appealing feature of the proposed metabarrier is that the water-tank resonant units can be tuned by varying the water level; indeed, it is shown that, in this manner, opening frequencies and sizes of the band gaps can be changed. This is a remarkable advantage over alternative seismic metamaterials that, in general, are not designed to be tunable. All calculations are implemented in COMSOL Multiphysics.</div></div>\",\"PeriodicalId\":14311,\"journal\":{\"name\":\"International Journal of Solids and Structures\",\"volume\":\"324 \",\"pages\":\"Article 113656\"},\"PeriodicalIF\":3.8000,\"publicationDate\":\"2025-09-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Solids and Structures\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0020768325004421\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MECHANICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Solids and Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0020768325004421","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MECHANICS","Score":null,"Total":0}
Seismic metamaterials for Rayleigh wave attenuation: A novel concept of soil-embedded water-tank metabarrier
In the context of ongoing research on seismic metamaterials, this paper proposes a novel metabarrier for seismic Rayleigh wave attenuation, conceived as a periodic array of soil-embedded cylindrical water tanks acting as resonant units below the soil surface. A theoretical framework is developed, where the dynamics of the water tank is treated by a classical 3D linear, pressure-based model for fluid-structure interaction under earthquake and the soil is idealized as homogeneous and isotropic medium, in agreement with similar studies on seismic metamaterials. The dispersion diagram obtained from the Floquet–Bloch dispersion analysis exhibits relevant band gaps in the low frequency range of seismic Rayleigh waves, as well as in the higher frequency range of Rayleigh waves caused by other ground vibration sources as, e.g., railway or road traffic. Frequency-domain analyses of a soil domain with a finite array of water tanks validate the band gaps and show considerable attenuation. An appealing feature of the proposed metabarrier is that the water-tank resonant units can be tuned by varying the water level; indeed, it is shown that, in this manner, opening frequencies and sizes of the band gaps can be changed. This is a remarkable advantage over alternative seismic metamaterials that, in general, are not designed to be tunable. All calculations are implemented in COMSOL Multiphysics.
期刊介绍:
The International Journal of Solids and Structures has as its objective the publication and dissemination of original research in Mechanics of Solids and Structures as a field of Applied Science and Engineering. It fosters thus the exchange of ideas among workers in different parts of the world and also among workers who emphasize different aspects of the foundations and applications of the field.
Standing as it does at the cross-roads of Materials Science, Life Sciences, Mathematics, Physics and Engineering Design, the Mechanics of Solids and Structures is experiencing considerable growth as a result of recent technological advances. The Journal, by providing an international medium of communication, is encouraging this growth and is encompassing all aspects of the field from the more classical problems of structural analysis to mechanics of solids continually interacting with other media and including fracture, flow, wave propagation, heat transfer, thermal effects in solids, optimum design methods, model analysis, structural topology and numerical techniques. Interest extends to both inorganic and organic solids and structures.