Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published March 28, 2022 | Submitted
Report Open

Sparse metapiles for shear wave attenuation in half-spaces


We show that shear waves traveling towards the surface of a half-space medium can be attenuated via buried one-dimensional arrays of resonators -- here called metapiles -- arranged according to sparse patterns around a site to be isolated. Our focus is on shear waves approaching the surface along a direction perpendicular to the surface itself. First, we illustrate the behavior of metapiles, both experimentally and numerically, using 3D printed resonators embedded in an acrylic plate. Then, via numerical simulations, we extend this idea to the case study of an idealized soil half-space, and elucidate the influence of various design parameters on wave attenuation. Results of this work demonstrate that significant wave attenuation can be achieved by installing sparse resonating piles around a selected site on the free surface of the medium, rather than placing resonators directly underneath that same site. This work might have implications in metamaterial-based wave attenuation applications across scales.

Additional Information

We wish to thank Antonio Palermo for fruitful discussions, and Sai Sharan Injeti, Alex Ogren and Semih Taniker for helpful COMSOL-related assistance.

Attached Files

Submitted - 2110.02202.pdf


Files (1.0 MB)
Name Size Download all
1.0 MB Preview Download

Additional details

August 20, 2023
October 23, 2023