Study on mechanical and fracture characteristics of rock-like specimens with rough non-persistent joints by YADE DEM simulation
Journal article, 2023

Rough non-persistent joints exist widely in natural rock mass. The roughness of joints influences its mechanical and fracture characteristics. However, the research on rough non-persistent jointed rock mass is inadequate. To investigate the effects of joint angle, rock bridge angle and roughness of rough non-persistent joints, the rough non-persistent joints were truncated and their JRC was calibrated based on the Barton typical roughness profiles. A series of DEM numerical uniaxial compression tests were conducted based on the laboratory tests of rock-like specimens with 3D printed non-persistent joints. By the investigation of mechanical behaviour, crack coalescence types, crack evolution law, fracture modes presented by the strain field, and micro-fracture mechanism revealed by the displacement vectors, it was verified that YADE is suitable to simulate the fracture of rough non-persistent jointed specimens; the six types of coalescence of rough non-persistent joints were concluded, and the relation between micro-crack and macro-fracture was established by the four types of micro-cracks causing macro-fractures.

DEM

Fracture mechanism

Crack coalescence

Rough non-persistent joints

Author

Benxin Wang

University of Science and Technology Beijing

Ltd.

Chalmers, Architecture and Civil Engineering, Geology and Geotechnics

Eleni Gerolymatou

Clausthal University of Technology

Chalmers, Architecture and Civil Engineering, Geology and Geotechnics

Aibing Jin

University of Science and Technology Beijing

Computers and Geotechnics

0266-352X (ISSN) 1873-7633 (eISSN)

Vol. 158 105382

Subject Categories

Mineral and Mine Engineering

Geophysical Engineering

Applied Mechanics

DOI

10.1016/j.compgeo.2023.105382

More information

Latest update

4/13/2023