333 citations · 2.4k across the 30 of their papers we have counts for
6 papers · 1 filter
Edge states and topological pumping in elastic lattices with periodically modulated coupling
Matheus I. N. Rosa, Raj Kumar Pal, José R. F. Arruda +1
We investigate the dispersion topology of elastic lattices characterized by spatial stiffness modulation. The modulation is defined by the sampling of a two-dimensional surface, wh…
Valley based splitting of topologically protected helical waves in elastic plates
Marco Miniaci, Raj Kumar Pal, Raffaele Manna +1
Topological protection offers unprecedented opportunities for wave manipulation and energy transport in various fields of physics, including elasticity, acoustics, quantum mechanic…
The role of nonlinearities in topological protection: using magnetically coupled fidget spinners
Javier Vila, Glaucio H. Paulino, Massimo Ruzzene
We investigate and experimentally observe the existence of topologically protected interface modes in a one-dimensional mechanical lattice, and we report on the effect of nonlinear…
Tunable wave propagation by varying prestrain in tensegrity-based periodic media
Raj Kumar Pal, Massimo Ruzzene, Julian J. Rimoli
This paper investigates the dynamic properties of one, two and three-dimensional tensegrity-based periodic structures introduced in Rimoli and Pal, Comp. B, 2017, which are here te…
Time-periodic stiffness modulation in elastic metamaterials for selective wave filtering: theory and experimental investigations
Giuseppe Trainiti, Yiwei Xia, Jacopo Marconi +2
We report on broadband-to-narrowband elastic wave filtering resulting from time-periodic modulation of the stiffness of a one-dimensional elastic waveguide. Time modulation produce…
A study of deformation localization in nonlinear elastic lattices
Raj Kumar Pal, Federico Bonetto, Luca Dieci +1
The paper investigates localized deformation patterns resulting from the onset of instabilities in lattice structures. The study is motivated by previous observations on discrete h…