Binary mixtures of disks and elongated particles: Texture and mechanical properties
© 2016 American Physical Society. We analyze the shear strength and microstructure of binary granular mixtures consisting of disks and elongated particles by varying systematically both the mixture ratio and degree of homogeneity (from homogeneous to fully segregated). The contact dynamics method is...
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th-cmuir.6653943832-414252017-09-28T04:21:12Z Binary mixtures of disks and elongated particles: Texture and mechanical properties Azéma E. Preechawuttipong I. Radjai F. © 2016 American Physical Society. We analyze the shear strength and microstructure of binary granular mixtures consisting of disks and elongated particles by varying systematically both the mixture ratio and degree of homogeneity (from homogeneous to fully segregated). The contact dynamics method is used for numerical simulations with rigid particles interacting by frictional contacts. A counterintuitive finding of this work is that the shear strength, packing fraction, and, at the microscopic scale, the fabric, force, and friction anisotropies of the contact network are all nearly independent of the degree of homogeneity. In other words, homogeneous mixtures have the same strength properties as segregated packings of the two particle shapes. In contrast, the shear strength increases with the proportion of elongated particles correlatively with the increase of the corresponding force and fabric anisotropies. By a detailed analysis of the contact network topology, we show that various contact types contribute differently to force transmission and friction mobilization. 2017-09-28T04:21:12Z 2017-09-28T04:21:12Z 2016-10-14 Journal 24700045 2-s2.0-84991669627 10.1103/PhysRevE.94.042901 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84991669627&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/41425 |
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© 2016 American Physical Society. We analyze the shear strength and microstructure of binary granular mixtures consisting of disks and elongated particles by varying systematically both the mixture ratio and degree of homogeneity (from homogeneous to fully segregated). The contact dynamics method is used for numerical simulations with rigid particles interacting by frictional contacts. A counterintuitive finding of this work is that the shear strength, packing fraction, and, at the microscopic scale, the fabric, force, and friction anisotropies of the contact network are all nearly independent of the degree of homogeneity. In other words, homogeneous mixtures have the same strength properties as segregated packings of the two particle shapes. In contrast, the shear strength increases with the proportion of elongated particles correlatively with the increase of the corresponding force and fabric anisotropies. By a detailed analysis of the contact network topology, we show that various contact types contribute differently to force transmission and friction mobilization. |
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Azéma E. Preechawuttipong I. Radjai F. |
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Azéma E. Preechawuttipong I. Radjai F. Binary mixtures of disks and elongated particles: Texture and mechanical properties |
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Azéma E. Preechawuttipong I. Radjai F. |
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Azéma E. |
title |
Binary mixtures of disks and elongated particles: Texture and mechanical properties |
title_short |
Binary mixtures of disks and elongated particles: Texture and mechanical properties |
title_full |
Binary mixtures of disks and elongated particles: Texture and mechanical properties |
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Binary mixtures of disks and elongated particles: Texture and mechanical properties |
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Binary mixtures of disks and elongated particles: Texture and mechanical properties |
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binary mixtures of disks and elongated particles: texture and mechanical properties |
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2017 |
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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84991669627&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/41425 |
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