109 citations · 508 across the 14 of their papers we have counts for
14 papers
Physics-informed discrete element modeling for the bandgap engineering of cylinder chains
Yeongtae Jang, Eunho Kim, Jinkyu Yang +1
We propose an efficient method to build a simple discrete element model (DEM) that accurately simulates the oscillation of a continuum beam. The DEM is based on the Timoshenko beam…
Gradient-index granular crystals: From boomerang motion to asymmetric transmission of waves
Eunho Kim, Rajesh Chaunsali, Jinkyu Yang
We present a gradient-index crystal that offers extreme tunability in terms of manipulating the propagation of elastic waves. For small-amplitude excitations, we achieve control ov…
Bloch oscillation of elastic waves in the graded lattice of 3D-printed hollow elliptical cylinders
Hyunryung Kim, Xiaotian Shi, Eunho Kim +1
We study the Bloch oscillation of elastic waves in a chain composed of hollow elliptical cylinders (HECs). These HECs are 3D-printed in different wall thicknesses and are arranged…
Nonlinear Wave Propagation in 3D-Printed Graded Lattices of Hollow Elliptical Cylinders
Hyunryung Kim, Eunho Kim, Jinkyu Yang
We propose a 3D-printed graded lattice made of hollow elliptical cylinders (HECs) as a new way to design impact mitigation systems. We observe asymmetric dynamics in the graded HEC…
Demonstration of dispersive rarefaction shocks in hollow elliptical cylinder chains
H. Kim, E. Kim, C. Chong +2
We report an experimental and numerical demonstration of dispersive rarefaction shocks (DRS) in a 3D-printed soft chain of hollow elliptical cylinders. We find that, in contrast to…
Extreme control of impulse transmission by cylinder-based nonlinear phononic crystals
Rajesh Chaunsali, Matthew Toles, Jinkyu Yang +1
We present a novel device that can offer two extremes of elastic wave propagation --- nearly complete transmission and strong attenuation under impulse excitation. The mechanism of…