Sun Qi-Cheng
Tsinghua University
20 Papers
68 Citations
Sun Qi-Cheng is an academic researcher from Tsinghua University. The author has contributed to research in topics: Granular material & Force chain. The author has an hindex of 6, co-authored 20 publications.
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Papers
Experimental study on the mobility of channelized granular mass flow
TL;DR: In this paper, the authors investigated the factors influencing granular mass flow mobility in a flume model and found that the initial water content was a critical water content corresponding to the smallest flow mobility for different granular materials, while an increase in the total flow mass generally induced a reduction in the travel angle.
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Development of shear band in a granular material in biaxial tests
TL;DR: In this paper, the formation and evolution of shear band have importarit bearing to the stability of a granular assembly, and the results show that within shear zone the solid fraction is smaller and the coordination number fluctuates violently, which indicates that they are unjammed.
16
•Journal Article
Review on granular flow dynamics and its discrete element method
TL;DR: In this paper, the authors introduce Hertzian law and Mindlin-Deresiewicz theory for normal and tangential contact forces between non-adhesion particles, and discuss the new granular flowmap proposed by Campbell (2002,2005,2006), based on the relative importance of Bagnold's inertial stress to the elastic stress of force chains.
16
•Journal Article
Advances in the micro-macro mechanics of granular soil materials
Sun Qi-Cheng,Cheng Xiaohui +1 more
TL;DR: In this paper, major fundamental problems are presented introduced and discussed, including the characteristics of microscale structure, procedure of micro-macro study with Rowe stress dilatancy relation as an example, derivation of stress and strain from micro scale structure, the relation of macroscale strength with particle friction, size effect and similarity.
10
Free‐surface Simulations of Newtonian and Non‐Newtonian Fluids with the Lattice Boltzmann Method
TL;DR: In this article, a three-dimensional lattice Boltzmann method (LBM) was applied to Newtonian and non-Newtonian flows with free surfaces, where a mass tracking algorithm was incorporated to capture the free surface, whereas Papanastasiou modified model was used for Bingham fluids.
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