Flat lens effect on seismic waves propagation in the subsoil

被引：48

作者：

Brule, Stephane ^{[1
]}

Javelaud, Emmanuel H. ^{[1
]}

Enoch, Stefan ^{[2
]}

Guenneau, Sebastien ^{[2
]}

机构：

[1] Menard, F-91620 Nozay, France

[2] Aix Marseille Univ, Inst Fresnel, Cent Marseille, CNRS, F-13013 Marseille, France

来源：

SCIENTIFIC REPORTS | 2017年 / 7卷

关键词：

D O I：

10.1038/s41598-017-17661-y

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We show that seismic energy simulated by an artificial source that mainly propagates Rayleigh surface waves, is focused in structured soil made of a grid of holes distributed in the ground. We carry out large scale field tests with a structured soil made of a grid consisting of cylindrical and vertical holes in the ground and a low frequency artificial source (< 10 Hz). This allows the identification of a distribution of energy inside the grid, which can be interpreted as the consequence of a dynamic anisotropy akin to an effective negative refraction index. Such a flat lens reminiscent of what Veselago and Pendry envisioned for light opens avenues in seismic metamaterials to counteract partially or totally the most devastating components of seismic signals.

引用

页数：9

共 40 条

[1] Clamped seismic metamaterials: ultra-low frequency stop bands [J].

Achaoui, Y. ;

Antonakakis, T. ;

Brule, S. ;

Craster, R. V. ;

Enoch, S. ;

Guenneau, S. .

NEW JOURNAL OF PHYSICS, 2017, 19

[2] Seismic waves damping with arrays of inertial resonators [J].

Achaoui, Younes ;

Ungureanu, Bogdan ;

Enoch, Stefan ;

Brule, Stephane ;

Guenneau, Sebastien .

EXTREME MECHANICS LETTERS, 2016, 8 :30-37

[3]

Adibi A. Khelif A., 2016, PHONONIC CRYSTALS FU

[4] Moulding and shielding flexural waves in elastic plates [J].

Antonakakis, T. ;

Craster, R. V. ;

Guenneau, S. .

EPL, 2014, 105 (05)

[5] High-frequency asymptotics for microstructured thin elastic plates and platonics [J].

Antonakakis, T. ;

Craster, R. V. .

PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 2012, 468 (2141) :1408-1427

[6] Experiments on Seismic Metamaterials: Molding Surface Waves [J].

Brule, S. ;

Javelaud, E. H. ;

Enoch, S. ;

Guenneau, S. .

PHYSICAL REVIEW LETTERS, 2014, 112 (13)

[7]

Brule S., 2012, 9 INT C ASS EL TRANS

[8]

Brule S, 2017, PRATIQUE INTERACTION

[9] Metamaterial-like transformed urbanism [J].

Brûlé S. ;

Ungureanu B. ;

Achaoui Y. ;

Diatta A. ;

Aznavourian R. ;

Antonakakis T. ;

Craster R. ;

Enoch S. ;

Guenneau S. .

Innovative Infrastructure Solutions, 2017, 2 (1)

[10] Vibrant times for mechanical metamaterials [J].

Christensen, Johan ;

Kadic, Muamer ;

Wegener, Martin ;

Kraft, Oliver ;

Wegener, Martin .

MRS COMMUNICATIONS, 2015, 5 (03) :453-462

← 1 2 3 4 →