Techno Press
You logged in as

Geomechanics and Engineering   Volume 16, Number 5, December10 2018, pages 471-482
DOI: https://doi.org/10.12989/gae.2018.16.5.471
 
A systematic approach to the calibration of micro-parameters for the flat-jointed bonded particle model
Changtai Zhou, Chaoshui Xu, Murat Karakus and Jiayi Shen

 
Abstract     [Buy Article]
    A flat-jointed bonded-particle model (BPM) has been proved to be an effective tool for simulating mechanical behaviours of intact rocks. However, the tedious and time-consuming calibration procedure imposes restrictions on its widespread application. In this study, a systematic approach is proposed for simplifying the calibration procedure. The initial relationships between the microscopic, constitutive parameters and macro-mechanical rock properties are firstly determined through dimensionless analysis. Then, sensitivity analyses and regression analyses are conducted to quantify the relationships, using results from numerical simulations. Finally, four examples are used to demonstrate the effectiveness and robustness of the proposed systematic approach for the calibration procedure of BPMs.
 
Key Words
    discrete element method; bonded-particle model; flat-jointed model; micro-parameters; macro-rock properties; intact rocks
 
Address
Changtai Zhou and Murat Karakus: School of Civil, Environmental and Mining Engineering, The University of Adelaide, Adelaide, Australia

Chaoshui Xu: 1.) School of Civil, Environmental and Mining Engineering, The University of Adelaide, Adelaide, Australia
2.) School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, China

Jiayi Shen: Institute of Port, Coastal and Offshore Engineering, Zhejiang University, Hangzhou, China
 

Techno-Press: Publishers of international journals and conference proceedings.       Copyright © 2020 Techno Press
P.O. Box 33, Yuseong, Daejeon 305-600 Korea, Tel: +82-42-828-7996, Fax : +82-42-828-7997, Email: technop@chol.com