TY - JOUR
T1 - Simulation-guided optimization of granular phononic crystal structure using the discrete element method
AU - Ostanin, Igor
AU - Cheng, Hongyang
AU - Magnanimo, Vanessa
N1 - Funding Information:
I.A.O. postdoc project was supported by the Materials programme of the University of Twente, hosted by MESA+. The financial support from the Dutch Research Council (NWO), The Netherlands through OpenMind Project “Soft Seismic Shields” is gratefully acknowledged.
Publisher Copyright:
© 2022 The Author(s)
PY - 2022/8
Y1 - 2022/8
N2 - The paper describes a novel methodology of designing granular phononic crystals for acoustic wave manipulations. A discrete element method is utilized to model the dynamics of a pulse wave propagating through the densely packed assembly of elastic spherical particles with an embedded phononic crystal — the region consisting of a certain arrangement of particles with varying densities. We suggest an optimization strategy that extremizes the useful properties of a granular phononic crystal, which are described in terms of a noise-proof functional based on frequency–wavenumber summation of spectral energy density. Few types of efficient phononic crystals are identified. The suggested methodology is of interest for a number of applications, in particular, for seismic shielding and selective sound absorption.
AB - The paper describes a novel methodology of designing granular phononic crystals for acoustic wave manipulations. A discrete element method is utilized to model the dynamics of a pulse wave propagating through the densely packed assembly of elastic spherical particles with an embedded phononic crystal — the region consisting of a certain arrangement of particles with varying densities. We suggest an optimization strategy that extremizes the useful properties of a granular phononic crystal, which are described in terms of a noise-proof functional based on frequency–wavenumber summation of spectral energy density. Few types of efficient phononic crystals are identified. The suggested methodology is of interest for a number of applications, in particular, for seismic shielding and selective sound absorption.
KW - Discrete element method
KW - Granular phononic crystals
KW - UT-Hybrid-D
UR - http://www.scopus.com/inward/record.url?scp=85134681552&partnerID=8YFLogxK
U2 - 10.1016/j.eml.2022.101825
DO - 10.1016/j.eml.2022.101825
M3 - Article
AN - SCOPUS:85134681552
SN - 2352-4316
VL - 55
JO - Extreme Mechanics Letters
JF - Extreme Mechanics Letters
M1 - 101825
ER -