Simulations of the effect of particle size on texture and force transmission in bidisperse granular composites

© The Authors, published by EDP Sciences, 2017. The objective of this study is to investigate the influence of the particle size ratio on texture and force transmission in two-dimensional cohesionless binary granular composties by using molecular dynamics (MD) simulations. Four numerical composite s...

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Main Authors: Itthichai Preechawuttipong, Pawarut Jongchansitto
Format: Conference Proceeding
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/57903
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-579032018-09-05T03:53:11Z Simulations of the effect of particle size on texture and force transmission in bidisperse granular composites Itthichai Preechawuttipong Pawarut Jongchansitto Physics and Astronomy © The Authors, published by EDP Sciences, 2017. The objective of this study is to investigate the influence of the particle size ratio on texture and force transmission in two-dimensional cohesionless binary granular composties by using molecular dynamics (MD) simulations. Four numerical composite samples, which differ in terms of the particle size ratios, are used in this study. The samples are composed of two constitutive materials with a stiffness ratio of four between the higher one termed as stiff particle and another termed as soft particle. The samples are subjected to an uniaxial confined vertical compression on the upper wall. The results under static conditions show that the particle size ratio mainly affects the contact sub-networks. The coordination number decreases when the particle size ratios (Dstiff/Dsoft = 1.2-3.0) increase, contrary to stiff-any case. Considering the spatial arrangement of contact directions, contacts between stiff particles exhibit an anisotropic distribution. On the contrary, the other contacts, i.e. soft-soft and stiff-soft contacts play a role to support the granular system in equilibrium. It is interesting to note that for all the particle size ratios, an exponential distribution and power-law are observed for the strong and weak network, respectively. Furthermore, almost 60% of the entire contacts transmit the weak forces. 2018-09-05T03:53:11Z 2018-09-05T03:53:11Z 2017-06-30 Conference Proceeding 2100014X 21016275 2-s2.0-85024126282 10.1051/epjconf/201714005003 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85024126282&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/57903
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Physics and Astronomy
spellingShingle Physics and Astronomy
Itthichai Preechawuttipong
Pawarut Jongchansitto
Simulations of the effect of particle size on texture and force transmission in bidisperse granular composites
description © The Authors, published by EDP Sciences, 2017. The objective of this study is to investigate the influence of the particle size ratio on texture and force transmission in two-dimensional cohesionless binary granular composties by using molecular dynamics (MD) simulations. Four numerical composite samples, which differ in terms of the particle size ratios, are used in this study. The samples are composed of two constitutive materials with a stiffness ratio of four between the higher one termed as stiff particle and another termed as soft particle. The samples are subjected to an uniaxial confined vertical compression on the upper wall. The results under static conditions show that the particle size ratio mainly affects the contact sub-networks. The coordination number decreases when the particle size ratios (Dstiff/Dsoft = 1.2-3.0) increase, contrary to stiff-any case. Considering the spatial arrangement of contact directions, contacts between stiff particles exhibit an anisotropic distribution. On the contrary, the other contacts, i.e. soft-soft and stiff-soft contacts play a role to support the granular system in equilibrium. It is interesting to note that for all the particle size ratios, an exponential distribution and power-law are observed for the strong and weak network, respectively. Furthermore, almost 60% of the entire contacts transmit the weak forces.
format Conference Proceeding
author Itthichai Preechawuttipong
Pawarut Jongchansitto
author_facet Itthichai Preechawuttipong
Pawarut Jongchansitto
author_sort Itthichai Preechawuttipong
title Simulations of the effect of particle size on texture and force transmission in bidisperse granular composites
title_short Simulations of the effect of particle size on texture and force transmission in bidisperse granular composites
title_full Simulations of the effect of particle size on texture and force transmission in bidisperse granular composites
title_fullStr Simulations of the effect of particle size on texture and force transmission in bidisperse granular composites
title_full_unstemmed Simulations of the effect of particle size on texture and force transmission in bidisperse granular composites
title_sort simulations of the effect of particle size on texture and force transmission in bidisperse granular composites
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85024126282&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/57903
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