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Journal of Zhejiang University SCIENCE A 1998 Vol.-1 No.-1 P.

http://doi.org/10.1631/jzus.A2200226


Effect of morphological gene mutation and decay on energy dissipation behaviour of granular soils


Author(s):  Wei XIONG, Qi-min ZHANG, Jian-feng WANG

Affiliation(s):  Department of Architecture and Civil Engineering, City University of Hong Kong, Hong Kong, China; more

Corresponding email(s):   jefwang@cityu.edu.hk

Key Words:  X-ray micro-computed tomography, Spherical harmonic analysis, Discrete element method, Morphological gene mutation, Energy dissipation


Wei XIONG, Qi-min ZHANG, Jian-feng WANG. Effect of morphological gene mutation and decay on energy dissipation behaviour of granular soils[J]. Journal of Zhejiang University Science A, 1998, -1(-1): .

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author="Wei XIONG, Qi-min ZHANG, Jian-feng WANG",
journal="Journal of Zhejiang University Science A",
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publisher="Zhejiang University Press & Springer",
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%T Effect of morphological gene mutation and decay on energy dissipation behaviour of granular soils
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%A Qi-min ZHANG
%A Jian-feng WANG
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A2200226

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T1 - Effect of morphological gene mutation and decay on energy dissipation behaviour of granular soils
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A2200226


Abstract: 
In this paper, the x-ray micro-computed tomography (X-ray μCT), spherical harmonical-based principal component analysis (SH-PCA) and discrete element method (DEM) were incorporated to generate virtual samples with morphological gene mutation at different length scales. All samples were subjected to axial compression and constant confining stress. The effects of multiscale particle morphology on the stress-strain and energy storage/dissipation responses of granular soils were investigated. It is found that: (a) the effects of particle morphology on the initial stiffness, stress-strain, volumetric strain and frictional energy dissipation behaviours are more pronounced for looser samples than for denser ones; (b) among different length scales, the particle morphology at the local roundness-level outperforms the one at the general form-level in dictating the macro-scale responses of granular soils; (c) the energy dissipation of a granular assemblage is a result of competition between particle morphology and initial void ratio.

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