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Hybrid finite-discrete element modelling of various rock fracture modes during three conventional bending tests

Citation

An, H and Wu, S and Liu, H and Wang, X, Hybrid finite-discrete element modelling of various rock fracture modes during three conventional bending tests, Sustainability, 14, (2) pp. 1-26. ISSN 2071-1050 (2022) [Refereed Article]


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DOI: doi:10.3390/su14020592

Abstract

The numerical techniques for modelling the rock fracture have been briefly reviewed. A hybrid finite-discrete element method (HFDEM) is proposed to simulate various fracture types of rock. A fracture model is implemented in the HFDEM for simulation of the three main fracture types. In addition, the influence of the strain rate is considered during the HFDEM modelling rock behavior. Then, two typical rock mechanism tests are employed to calibrate the HFDEM. The proposed method has well modelled the rock fracture processes and can obtain reasonable stress distribution and force–displacement curves. After that, the HFDEM is used to model three convention bending tests. The obtained rock fracture processes indicates that the HFDEM can simulate various fracture types. The obtained rock strengths and fracture toughness indicate that the HFDEM can reflect the influence of the strain rate. It is concluded that the HFDEM can model the entire and complete rock fracture process during the three convention bending tests, and it also can capture the rock’s behavior on the strain rate.

Item Details

Item Type:Refereed Article
Keywords:HFDEM, numerical method, rock fracture, strain rate
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)
ID Code:150912
Year Published:2022
Web of Science® Times Cited:3
Deposited By:Engineering
Deposited On:2022-07-05
Last Modified:2022-09-02
Downloads:0

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