A systematic approach to the calibration of micro-parameters for the flatjointed bonded particle model

作者：Zhou, Changtai; Xu, Chaoshui^*; Karakus, Murat; Shen, Jiayi

来源：Geomechanics and Engineering, 2018, 16(5): 471-482.

DOI：10.12989/gae.2018.16.5.471

• discrete element method
• bonded-particle model
• flat-jointed model
• micro-parameters
• macro-rock properties
• intact rocks

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.

• 出版日期2018-12-10
• 单位武汉科技大学; 浙江大学