Seismic isolation foundations with effective attenuation zones

Shi, Zhifei; Cheng, Zhibao; Xiang, Hongjun

doi:10.1016/j.soildyn.2013.11.009

Cited by 94 publications

(39 citation statements)

References 30 publications

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“…Bao et al (2012) propose a layered periodic foundation materialised via mass-in-mass unit cells, and demonstrate superior performance with respect to conventional bearing solutions. Shi et al (2014) propose a periodic foundation made up of concrete layers intermixed with rubber blocks, resulting in band gaps as low as 2.5 Hz, with the outcomes experimentally supported in Yan et al (2014) and Xiang et al (2012). Finocchio et al (2014) follow a different approach via composition of a seismic metamaterial from isochronous spherical oscillators rolling over a cycloidal trajectory.…”

Section: Introductionmentioning

confidence: 97%

On the feasibility of structural metamaterials for seismic-induced vibration mitigation

Wagner

Dertimanis

Antoniadis

et al. 2016

IJEIE

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This paper summarizes recent efforts toward development of locally resonant metamaterial structures for seismic isolation purposes. The metamaterial structure forms a blind zone in the frequency domain, inhibiting the propagation of waves characterised by frequencies lying within this range. The feasibility of fashioning such systems in the [0.5, 5] Hz frequency band, linked to earthquake induced response, is here explored. An analytical and numerical investigation is undertaken relying on Bloch's theory and classical vibration analysis. The analysed case-studies pertain to both one-dimensional and two-dimensional mass-in-mass lattice systems investigated for overlapping sub-bands. On the basis of the offered analysis, a basic unit cell design is proposed, and a parametric study is carried out revealing the critical influence of the external-to-internal stiffness ratios adopted for the unit cell design. A further discussion is offered with respect to limitations and extensions of the proposed designs.Keywords: seismic isolation; metamaterials; metastructures; Bloch's theory; 1D and 2D vibration response analysis; periodic lattice; mass-in-mass unit cells; band-gaps. On the feasibility of structural metamaterials 21Reference to this paper should be made as follows: Wagner, P.R., Dertimanis, V.K., Antoniadis, I.A. and Chatzi, E.N. (2016)

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Section: Introductionmentioning

confidence: 97%

On the feasibility of structural metamaterials for seismic-induced vibration mitigation

Wagner

Dertimanis

Antoniadis

et al. 2016

IJEIE

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“…More recently, research on metamaterials was extended to the design of materials able to control elastic waves, targeting ultrasonic applications in acoustic imaging 7 and acoustic cloaking devices 8,9 . At smaller scales, advances in micro/nanofabrication techniques have allowed the use of metamaterials to control heat by altering high frequency (THz) phonons [10][11][12][13] . At very large scales, phononic cystals and metamaterials have been suggested for protecting civil infrastructures from impacts and seismic threats [14][15][16] .…”

Section: Introductionmentioning

confidence: 99%

Wide band-gap seismic metastructures

Krödel

Thomé

Daraio

2015

Extreme Mechanics Letters

254

157

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“…Rubber is a material which is already used in recent studies 11,19 in order to compose periodic structures that have phononic band gaps at low frequencies. So, it would be very interesting to further investigate how the gaps of the proposed simple cubic layer-by-layer structure could be affected when rubber inclusions are added into the structure.…”

Section: The Structuresmentioning

confidence: 99%

Large scale phononic metamaterials for seismic isolation

Aravantinos-Zafiris

Sigalas

2015

Journal of Applied Physics

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A passively tunable acoustic metamaterial lens for selective ultrasonic excitationIn this work, we numerically examine structures that could be characterized as large scale phononic metamaterials. These novel structures could have band gaps in the frequency spectrum of seismic waves when their dimensions are chosen appropriately, thus raising the belief that they could be serious candidates for seismic isolation structures. Different and easy to fabricate structures were examined made from construction materials such as concrete and steel. The well-known finite difference time domain method is used in our calculations in order to calculate the band structures of the proposed metamaterials. V C 2015 AIP Publishing LLC.

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Seismic isolation foundations with effective attenuation zones

Cited by 94 publications

References 30 publications

On the feasibility of structural metamaterials for seismic-induced vibration mitigation

On the feasibility of structural metamaterials for seismic-induced vibration mitigation

Wide band-gap seismic metastructures

Large scale phononic metamaterials for seismic isolation

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