Multiscale Modeling of Soils

Zhen-Yu Yin (), Pierre-Yves Hicher () and Yin-Fu Jin ()
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Zhen-Yu Yin: The Hong Kong Polytechnic University, Department of Civil and Environmental Engineering
Pierre-Yves Hicher: Ecole Centrale de Nantes, Research Institute in Civil and Mechanical Engineering UMR CNRS GeM
Yin-Fu Jin: The Hong Kong Polytechnic University, Department of Civil and Environmental Engineering

Chapter Chapter 9 in Practice of Constitutive Modelling for Saturated Soils, 2020, pp 311-339 from Springer

Abstract: Abstract This chapter presents the multiscale modeling methodology for soils from micro to macro. First, the multiscale feature of soils within the general framework of the multiscale approach to granular materials is presented. Then, the fundamentals of micromechanics are presented in more detail, including interparticle contact laws, definitions of the strain tensor, effective stress tensor and fabric tensor, averaging and localization operators, and homogenization integration. As an example, the micromechanics-based Chang–Hicher (CH) model is presented with experimental validation. Some possible developments of models based on the CH model are presented considering the capillary force, the chemical force in grouted sand, the surface energy force, and the mechanical force in clayey materials. Finally, the MicroSoil model in the ErosLab platform is presented for a practical exercise.

Date: 2020
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DOI: 10.1007/978-981-15-6307-2_9

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