Sound damping in soft particle packings: the interplay between configurational disorder and inelasticity

Soft Matter ◽  
2021 ◽  
Vol 17 (15) ◽  
pp. 4204-4212
Author(s):  
Kuniyasu Saitoh ◽  
Hideyuki Mizuno
Keyword(s):  
Soft Particle ◽  
Two Dimensional ◽  
Particle Packings

We numerically investigate sound damping in disordered two-dimensional soft particle packings. Our findings suggest that sound damping in soft particle packings is determined by the interplay between elastic heterogeneities and inelasticity.

scholarly journals The role of deformability in determining the structural and mechanical properties of bubbles and emulsions

Soft Matter ◽  
2019 ◽  
Vol 15 (29) ◽  
pp. 5854-5865 ◽  
Author(s):  
Arman Boromand ◽  
Alexandra Signoriello ◽  
Janna Lowensohn ◽  
Carlos S. Orellana ◽  
Eric R. Weeks ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Two Dimensions ◽  
Soft Particle ◽  
Computational Studies ◽  
Isotropic Compression ◽  
Deformable Particle ◽  
Particle Packings

We perform computational studies of jammed particle packings in two dimensions undergoing isotropic compression using the well-characterized soft particle (SP) model and deformable particle (DP) model that we developed for bubbles and emulsions.

scholarly journals Discharge of soft and hard grains and their mixtures from 2D silos

2021 ◽  
Vol 249 ◽  
pp. 03002
Author(s):  
Jing Wang ◽  
Kirsten Harth ◽  
Ralf Stannarius ◽  
Bo Fan ◽  
Tamás Börzsönyi
Keyword(s):  
Hard Spheres ◽  
Gradual Transition ◽  
Soft Particle ◽  
Two Dimensional ◽  
Hard Particles ◽  
Soft Spheres ◽  
Particle Ensemble

The outflow characteristics of hard grains from containers with narrow basal openings have been extensively studied. Recently, it was shown that soft, low-frictional grains can behave qualitatively different from the behavior of rigid grains. We compare experimentally the discharge of monodisperse hard spheres, soft spheres and mixtures of both from a quasi-two dimensional (2D) silo. The experiments demonstrate the remarkable consequences of the addition of few hard particles to a soft particle ensemble, as well as the gradual transition between the two limiting cases of pure one-component materials.

scholarly journals On the Horizontal Deviation of a Spinning Projectile Penetrating into Granular Systems

2017 ◽  
Vol 2017 ◽  
pp. 1-7
Author(s):  
Waseem Ghazi Alshanti
Keyword(s):  
General Theory ◽  
Dynamical Behavior ◽  
Numerical Approach ◽  
Granular Systems ◽  
Soft Particle ◽  
Impact Point ◽  
Two Dimensional ◽  
Rotation Direction ◽  
Spinning Projectile ◽  
The Right

The absence of a general theory that describes the dynamical behavior of the particulate materials makes the numerical simulations the most current powerful tool that can grasp many mechanical problems relevant to the granular materials. In this paper, based on a two-dimensional soft particle discrete element method (DEM), a numerical approach is developed to investigate the consequence of the orthogonal impact into various granular beds of projectile rotating in both clockwise (CW) and counterclockwise (CCW) directions. Our results reveal that, depending on the rotation direction, there is a significant deviation of the x-coordinate of the final stopping point of a spinning projectile from that of its original impact point. For CW rotations, a deviation to the right occurs while a left deviation has been recorded for CCW rotation case.

scholarly journals Transparent experiments: releasing data from mechanical tests on three dimensional hydrogel sphere packings

2019 ◽  
Vol 22 (1) ◽  
Author(s):  
Jonathan Barés ◽  
Nicolas Brodu ◽  
Hu Zheng ◽  
Joshua A. Dijksman
Keyword(s):  
Three Dimensional ◽  
Mechanical Tests ◽  
Contact Forces ◽  
Soft Particle ◽  
Sphere Packings ◽  
Link Type ◽  
Hydrogel Particle ◽  
Particle Packings

AbstractWe describe here experiments on the mechanics of hydrogel particle packings from the Behringer lab, performed between 2012 and 2015. These experiments quantify the evolution of all contact forces inside soft particle packings exposed to compression, shear, and the intrusion of a large intruder. The experimental set-ups and processes are presented and the data are concomitantly published in a repository (Barés et al. in Dryad, Dataset 10.5061/dryad.6djh9w0x8, 2019).

scholarly journals A Master equation for the probability distribution functions of forces in soft particle packings

Soft Matter ◽  
2015 ◽  
Vol 11 (7) ◽  
pp. 1253-1258 ◽  
Author(s):  
Kuniyasu Saitoh ◽  
Vanessa Magnanimo ◽  
Stefan Luding
Keyword(s):  
Molecular Dynamics ◽  
Probability Distribution ◽  
Master Equation ◽  
Molecular Dynamics Simulations ◽  
Distribution Functions ◽  
Soft Particle ◽  
Probability Distribution Functions ◽  
Soft Particles ◽  
Dynamics Simulations ◽  
Particle Packings

We study the microscopic response of force-chain networks in jammed soft particles to quasi-static isotropic (de)compressions by molecular dynamics simulations.

scholarly journals Centrifugal compression of soft particle packings: Theory and experiment

2010 ◽  
Vol 82 (4) ◽  
Author(s):  
K. N. Nordstrom ◽  
E. Verneuil ◽  
W. G. Ellenbroek ◽  
T. C. Lubensky ◽  
J. P. Gollub ◽  
...  
Keyword(s):  
Soft Particle ◽  
Particle Packings ◽  
Theory And Experiment

scholarly journals Soft particle clogging in two-dimensional hoppers

2021 ◽  
Vol 104 (4) ◽  
Author(s):  
Ran Tao ◽  
Madelyn Wilson ◽  
Eric R. Weeks
Keyword(s):  
Soft Particle ◽  
Two Dimensional

Spectrophotometric measurements of objective-prism spectra

1966 ◽  
Vol 24 ◽  
pp. 118-119
Author(s):  
Th. Schmidt-Kaler
Keyword(s):  
Progress Report ◽  
Two Dimensional ◽  
Objective Prism ◽  
Made In

I should like to give you a very condensed progress report on some spectrophotometric measurements of objective-prism spectra made in collaboration with H. Leicher at Bonn. The procedure used is almost completely automatic. The measurements are made with the help of a semi-automatic fully digitized registering microphotometer constructed by Hög-Hamburg. The reductions are carried out with the aid of a number of interconnected programmes written for the computer IBM 7090, beginning with the output of the photometer in the form of punched cards and ending with the printing-out of the final two-dimensional classifications.

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