Geometrical network of granular materials under isochoric cyclic shearing
| Autor: | Farhang Radjai, Patrick Mutabaruka, Mahdi Taiebat, Ming Yang |
|---|---|
| Přispěvatelé: | University of British Columbia (UBC), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Physique et Mécanique des Milieux Divisés (PMMD), Laboratoire de Mécanique et Génie Civil (LMGC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Shearing (physics)
Materials science Isochoric process Drop (liquid) Physics QC1-999 Isotropy [SPI.GCIV.GEOTECH]Engineering Sciences [physics]/Civil Engineering/Géotechnique 0211 other engineering and technologies Liquefaction 02 engineering and technology Mechanics Granular material 01 natural sciences Physics::Geophysics 0103 physical sciences Particle 010306 general physics Anisotropy 021101 geological & geomatics engineering |
| Zdroj: | EPJ Web of Conferences EPJ Web of Conferences, EDP Sciences, 2021, Powders & Grains 2021 – 9th International Conference on Micromechanics on Granular Media Buenos Aires (Virtual), Argentina, July 5, 13, 21, 29 and August 6, 2021, 249, pp.11004. ⟨10.1051/epjconf/202124911004⟩ EPJ Web of Conferences, Vol 249, p 11004 (2021) |
| ISSN: | 2100-014X |
| DOI: | 10.1051/epjconf/202124911004⟩ |
| Popis: | International audience; We use three-dimensional particle dynamics simulations to investigate the microstructure evolution of granular material subjected to isochoric cyclic shearing, driving the system to a liquefaction state. The cyclically sheared assembly presents a realistic macroscopic response as observed in physical experiments. By analyzing the contact network evolution in the post-liquefaction period, we show that the onset of liquefaction state is characterized by a sudden drop of coordination number and a fragile particle connectivity network. The simulation suggests a critical coordination number for exiting the liquefaction state. Evolution of fabric anisotropy combined with coordination number implies the isotropic and anisotropic gain or loss of contacts at certain durations of a post-liquefaction loading cycle. |
| Databáze: | OpenAIRE |
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