Modeling the Simultaneous Effects of Particle Size and Porosity in Simulating Geo-Materials
1School of Water Resource & Environment, China University of Geosciences, Beijing 100083, China.
Abstract:
The particle discrete element method (PDEM) is widely used to simulate rock and soil materials to obtain stress and strain. However, there are three shortcomings: (1) Single sphere or ellipsoids directly replace the soil particles; (2) it treats the diameters of spheres or ellipsoids as the soil particle size; (3) the overlapping particle volume is not deducted in calculating the porosity. Hence, it is difficult for the simulation of the geological body to agree with reality. This research found a rotation calculation model and a pixel counting method to make joint soil particles more accurately simulate geological materials to solve the three shortcomings. The model successfully obtained the gradation curve and porosity of the simulated geological body with joint particles. This research will further enrich and broaden the application prospects of PDEM and provide a reference for scientific research and engineering fields in geological engineering, geotechnical engineering, and petroleum engineering.
More Related Videos
Related Concept Videos
Porosity and Absorption of Aggregate
When all pores in an aggregate are filled with water, the aggregate is considered saturated and surface-dry. If left in dry air, water will evaporate until the...
Porosity in Cement Paste
The balance of water to cement in the mix is...
Pore Size Distribution
Adequate...
Modeling and Similitude
Typical Model Studies
Permeability of Concrete


