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Constitutive Modeling of the Cyclic Loading Response of Low Plasticity Fine-Grained Soils Read chapter Read first chapter

2018 | OriginalPaper | Chapter

Evolution of Meso-scale Structure at Critical State for Granular Media

Authors : Yang Liu, Ziqiao Cheng, Jianyu Li, Shuang Li

Published in: Proceedings of GeoShanghai 2018 International Conference: Fundamentals of Soil Behaviours

Publisher: Springer Singapore

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Abstract

Granular material is a typical multi-scale material, which physical and mechanical properties are similar to continuous medium in macroscopic scale, but discontinuous and strongly anisotropic in micro- and meso-scale. In this paper, numerical simulations of biaxial tests for ideal granular samples with different initial densities were carried out using discrete element method (DEM). Loop structures, which are represented by voronoi polygons, were taken as the basic meso-mechanical unit of granular material by mesh-subdivision. The evolutions of numbers, geometrical morphology for different loops were simulated and analyzed. From the mesoscopic point of view, critical state of granular media is the consequence of mutual transformation for higher-order loops and lower-order loops, the combined average and external manifestation of all loops.

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previous chapter 3D Multiscale Modelling of Strain Localization: Using a Micromechanically-Based Model
next chapter Physical Models to Investigate Soil Arching Phenomena Under Cyclic Footing Loading Using Transparent Soil
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Metadata
Title
Evolution of Meso-scale Structure at Critical State for Granular Media
Authors
Yang Liu
Ziqiao Cheng
Jianyu Li
Shuang Li
Copyright Year
2018
Publisher
Springer Singapore
Book
Proceedings of GeoShanghai 2018 International Conference: Fundamentals of Soil Behaviours

Print ISBN: 978-981-13-0124-7

Electronic ISBN: 978-981-13-0125-4

Copyright Year: 2018

DOI
https://doi.org/10.1007/978-981-13-0125-4_87