17 citations · 18 across the 4 of their papers we have counts for
5 papers
Global Bifurcations in a Damped-Driven Diatomic Granular Crystal
D. Pozharskiy, I. G. Kevrekidis, P. G. Kevrekidis
We revisit here the dynamics of an engineered dimer granular crystal under an external periodic drive in the presence of dissipation. Earlier findings included a saddle-node bifurc…
Equation-Free Computations as DDDAS Protocols for Bifurcation Studies: A Granular Chain Example
M. O. Williams, Y. M. Psarellis, D. Pozharskiy +5
This chapter discusses the development and implementation of algorithms based on Equation-Free/Dynamic Data Driven Applications Systems (EF/DDDAS) protocols for the computer-assist…
Manifold Learning for Accelerating Coarse-Grained Optimization
Dmitry Pozharskiy, Noah J. Wichrowski, Andrew B. Duncan +2
Algorithms proposed for solving high-dimensional optimization problems with no derivative information frequently encounter the "curse of dimensionality," becoming ineffective as th…
Experimental Study of Nonlinear Resonances and Anti-resonances in a Forced, Ordered Granular Chain
Yijing Zhang, Dmitry Pozharskiy, D. Michael McFarland +3
We experimentally study a one-dimensional uncompressed granular chain composed of a finite number of identical spherical beads with Hertzian interactions. The chain is harmonically…
Nonlinear Resonances and Antiresonances of a Forced Sonic Vacuum
D. Pozharskiy, Y. Zhang, M. O. Williams +4
We consider a harmonically driven acoustic medium in the form of a (finite length) highly nonlinear granular crystal with an amplitude and frequency dependent boundary drive. Remar…