Year: 2024
Type: article
Abstract: In this work, we propose two gradient index seismic metamaterials (GRIN SMs) for realizing the directional cloaks composed of blind holes with varying radii in a semi-infinite soil substrate for seismic Rayleigh waves. The results demonstrate that the designed cloaks can transfer more than 50% of the incident wave energy before it reaches the target buildings. More importantly, the designed cloaks have the property of wide working bandwidth from 6 Hz to 12 Hz. At certain frequencies, the attenuation of incident waves by the cloak can reach 80%. Moreover, one of cloaks composed of four Luneburg lens can achieve a multi-directional seismic cloak.
Source: Europhysics Letters (EPL)
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4401629955