eCite Digital Repository

Three-dimensional hybrid continuous-discontinuous modelling of the failure process of rock in Brazilian tests

Citation

Liu, H and Han, H and Wu, Y and Chan, A, Three-dimensional hybrid continuous-discontinuous modelling of the failure process of rock in Brazilian tests, Proceedings of the 3rd Australasian Conference on Computational Mechanics, 12-14 February 2018, Geelong, Australia, pp. 1-6. (2018) [Refereed Conference Paper]


Preview
PDF
Restricted - Request a copy
4Mb
  

Copyright Statement

Copyright unknown

Official URL: https://www.deakin.edu.au/third-australasian-confe...

Abstract

A three-dimensional (3D) fracture algorithm is implemented into a hybrid finite-discrete element method previously developed by the authors using a cohesive cracking model with an energy failure criterion to model the 3D transition from continuum to discontinuum during rock fracture. The newly developed 3D hybrid continuous-discontinuous method is then applied to model the fracture process of rock in the Brazilian tensile strength tests. After that, the obtained results are compared with those well documented in literatures to calibrate the development of the 3D fracture algorithm for the transition from continuum to discontinuum. Throughout this study, it is shown that the 3D hybrid continuous-discontinuous method is a valuable tool to investigate rock fracture and resultant fragment grinding behaviour. Compared with finite element method, the hybrid method is more robust in modelling rock failure, especially fracture, fragmentation, and fragment movements resulting in tertiary fractures while compared with discrete element method, the hybrid method is more versatile in dealing with irregular-shaped, deformable and breakable particles.

Item Details

Item Type:Refereed Conference Paper
Keywords:Numerical method, continuous modelling, discontinuous modelling, rock fracture, fragment grinding
Research Division:Engineering
Research Group:Civil Engineering
Research Field:Civil Geotechnical Engineering
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Engineering
UTAS Author:Liu, H (Dr Hong Liu)
UTAS Author:Han, H (Mr Haoyu Han)
UTAS Author:Wu, Y (Associate Professor Yuexiu Wu)
UTAS Author:Chan, A (Professor Andrew Chan)
ID Code:130615
Year Published:2018
Deposited By:Engineering
Deposited On:2019-02-06
Last Modified:2019-06-20
Downloads:1 View Download Statistics

Repository Staff Only: item control page