A Review of Research on Seismic Metamaterials

Abstract

In 2002, he was a lecturer in mechanical electrical engineering with the College of the Harbin Engineering University, Harbin, China, where he is currently a professor conducting teaching and research in vibration and noise, phononic crystals and metamaterials, etc. His current research interests include seismic metamaterials. Figure 1. SM correlation quantitative broken line chart.

Past, present and future of seismic metamaterials: experiments on soil dynamics, cloaking, large scale analogue computer and space–time modulations

“…We further note the theoretical and experimental observation of subwavelength stop bands for MHz Rayleigh waves propagating within an array of nickel pillars grown on a lithium niobate substrate [36]. In our opinion, these two seminal works that predate the area of seismic metamaterials have touched upon the essence of the wave physics at work in large scale mechanical metamaterials: control of surface seismic waves in the Bragg [1,35,37,38] and subwavelength [2,21,36,[39][40][41] regimes. In all fairness, seismologists and earthquake engineers had already noted 40 years ago the effect of soil roughness on the propagation of seismic waves [42].…”

Design of acoustic metamaterials made of Helmholtz resonators for perfect absorption by using the complex frequency plane

“…Although the definition of metamaterial is still a source of discussion within the community, in this article, we will name metamaterial a structured system made of resonant elements with physical properties not usually encountered for wavelengths much larger than its dimensions. Exponentially increasing attention has been paid to these systems in all the fields of wave physics as electromagnetics [5], acoustics [6], elastodynamics [7,8] and seismology [9], among others. In acoustics, the concept of metamaterial was introduced in the 2000s by Liu et al [10] and Fang et al [11].…”

İki Boyutlu Silindirik Dağıtıcılı Sonik Kristal Yapılarının Akustik Lens Özelliklerinin Zaman Bölgesi Sonlu Fark Simülasyonları ile İncelenmesi

“…Fotonik kristallerde keşfedilen birçok özellik (Veselago, 1968;Pendry, 2000;Ozbay, 2007) daha sonra sonik kristallerde gözlenmeye başlamıştır (Liu et al, 2019). Kristal örgü uygulamaları, elektromanyetik dalga ve akustik dalgalar ile sınırlı kalmamış, sismik dalgaların sismik kristal veya sismik metamaterial adı verilen periyodik olarak sismik dalga yayılım özelliğinin bozulması ile oluşturulan ortamların, frekans cevabında band boşlukları adı verilen frekans bölgelerinde sismik dalgaların zayıflatabileceğini öngören teorik çalışmalar yapılmış ve deneysel uygulamalar gösterilmiştir (Alagoz and Alagoz, 2011;Miniaci et al, 2016;Mu et al, 2020;Wang, 2020).…”