Deformation and Force Chain of Two-Dimensional Granular Systems under Continuous Loading
Fanxiu Chen1, Yuxin Liu1, Yuan Wang1
1School of Science, Qingdao University of Technology, Qingdao 266520, China.
Abstract:
A continuous loading experiment of a two-dimensional granular system was carried out and the experimental data were obtained by digital image correlation (DIC). The deformation field of the granular system and the changing laws of the deflection angle and coordination number of the granules on force chains with time were obtained. Based on the granule element method, the quantitative calculation of contact force was realized, and the internal force chains of the granular system were identified. The effects of contact force between granules and mechanical parameters on the evolution of force chains in a two-dimensional granular system under line loads were analyzed. The formation, evolution, and reconstruction of force chains in a granular system during loading, as well as the influence of the force chain network evolution on the macroscopic mechanical properties of granules were discussed. The experimental results indicated that the evolution of force chains was directly related to the number, geometric properties, and permutation distribution of granules in direct contact with the external load.
Related Concept Videos
Deformation of Member under Multiple Loadings
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
Temperature Dependent Deformation
Deformation of a Beam under Transverse Loading
The insights from the bending moment diagram extend to...
Normal Strain under Axial Loading
Plastic Behavior


