Guo, Liwei;
Xiang, Jiansheng;
Latham, John-Paul;
Izzuddin, Bassam;
(2020)
A generic computational model for three-dimensional fracture and fragmentation problems of quasi-brittle materials.
European Journal of Mechanics A: Solids
, 84
, Article 104069. 10.1016/j.euromechsol.2020.104069.
Preview |
Text
Manuscript_UCL_deposit.pdf - Accepted Version Download (2MB) | Preview |
Abstract
Fracture and fragmentation in three dimensions are of great importance to understand the mechanical behaviour of quasi-brittle materials in failure stress states. In this paper, a generic computational model has been developed in an in-house C/C++ code using the combined finite-discrete element method, which is capable of modelling the entire three-dimensional fracturing process, including pre-peak hardening deformation, post-peak strain softening, transition from continuum to discontinuum, and explicit interaction between discrete fragments. The computational model is validated by Brazilian tests and polyaxial compression tests, and a realistic multi-layer rock model in an in situ stress condition is presented as an application example. The results show that the computational model can capture both continuum and discontinuum behaviour and therefore it provides an ideal numerical tool for fracture and fragmentation problems.
| Type: | Article |
|---|---|
| Title: | A generic computational model for three-dimensional fracture and fragmentation problems of quasi-brittle materials |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.euromechsol.2020.104069 |
| Publisher version: | https://doi.org/10.1016/j.euromechsol.2020.104069 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Computational model, Finite element method, Discrete element method, Fracture, Fragmentation, 3D, Quasi-brittle material, Mohr-coulomb criterion |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10217490 |
Archive Staff Only
 |
View Item |
