Numerical study on the phononic band-structure of soft granular crystals
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Solids and Structures"
DOI: 10.1016/j.ijsolstr.2019.12.007
Abstract: Abstract The discrete element method has been widely adopted to study the phononic dispersion relation of granular crystals, but its intrinsic limitations in the conventional particle contact model are often overlooked. In this study, we… read more here.
Keywords: granular crystals; soft granular; dispersion relation; study phononic ... See more keywords
The micromorphic constitutive parameters and dispersion behaviors in different granular crystals
Sign Up to like & getrecommendations! Published in 2021 at "Powder Technology"
DOI: 10.1016/j.powtec.2021.07.021
Abstract: Abstract This study considers granular crystals respectively with different three-dimensional microstructures categorized into a medium dense microstructure and two dense microstructures in one-sized and two-sized particles. Macroscopic micromorphic constitutive parameters are obtained for different granular… read more here.
Keywords: micromorphic constitutive; constitutive parameters; different granular; frequency band ... See more keywords
Stimuli-responsive granular crystals assembled by dipolar and multipolar interactions.
Sign Up to like & getrecommendations! Published in 2021 at "Soft matter"
DOI: 10.1039/d1sm00887k
Abstract: This work describes granular crystals held together by unusual, multipolar interactions and, under the application of an external bias, undergoing reversible structural transitions between closed and open forms. The system comprises two types of polymeric… read more here.
Keywords: granular crystals; crystals assembled; responsive granular; stimuli responsive ... See more keywords
Active acoustic switches using two-dimensional granular crystals.
Sign Up to like & getrecommendations! Published in 2019 at "Physical review. E"
DOI: 10.1103/physreve.99.062901
Abstract: We employ numerical simulations to study active transistor-like switches made from two-dimensional (2D) granular crystals containing two types of grains with the same size but different masses. We tune the mass contrast and arrangement of… read more here.
Keywords: granular crystals; dimensional granular; acoustic switches; using two ... See more keywords
Gradient-Index Granular Crystals: From Boomerang Motion to Asymmetric Transmission of Waves.
Sign Up to like & getrecommendations! Published in 2019 at "Physical review letters"
DOI: 10.1103/physrevlett.123.214301
Abstract: 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 over wave transmission depth into the crystal. We numerically and experimentally… read more here.
Keywords: gradient index; granular crystals; index granular; transmission ... See more keywords
Study on dispersion and wave velocity in 2D elliptic granular crystals by a micromechanics-based micromorphic model
Sign Up to like & getrecommendations! Published in 2022 at "Advances in Mechanical Engineering"
DOI: 10.1177/16878132221119957
Abstract: This study considers two-dimensional elliptic granular crystals respectively with different aspect ratios. Using a micromechanics-based micromorphic model, macroscopic micromorphic constitutive modulus tensors of elliptic granular crystals are obtained. Two modes of Taylor expansion of relative… read more here.
Keywords: based micromorphic; micromechanics based; granular crystals; micromorphic model ... See more keywords