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Study on characteristics of three-dimensional granular meso-reconstruction of coal gangue roadbed

Fan Xiang-Xi, Hui Bing, Ma Shi-Jie, Fu Jian-Cun, Zhang Wen-Jun, Meng Ling-Xiao, Sun Zhi

Journal of Theoretical and Applied Mechanics

2022

Vol. 60 nr 3

361--374

The dynamic evolution process of the coal gangue particles’ core retention phenomenon in the process of crushing under stress, the evolution law of grading and the corresponding microscopic mechanical characteristics after continuous particle crushing are analyzed. The meso-level which reveals deformation phenomena of granular materials under the action of external loads is highly complex. At the qualitative level, the static compaction process of coal gangue samples can be roughly divided into three stages: initial compaction stage, compaction and crushing stage, and crushing (compaction) stage. It is proved that the interaction of lateral confined unidirectional compression of granular materials is mainly compression.

Numerical Analysis of Solid Particles Flow in Liquid Metal

Szucki M., Goraj T., Lelito J., Suchy J. S.

Archives of Foundry Engineering

2013

Vol. 13, iss. 3 spec.

161--166

The aim of the study was to determine the influence of the solid particles density and size on their distribution in the solidified cast. As part of the work, a series of numerical simulations of filling and solidification process were made with the use of FLOW-3D software. The analysis was performed on pure aluminum and six chosen types of particles with different size and density. Obtained results may help to understand the behavior of solid particles in liquid metals.