Please use this identifier to cite or link to this item:
Scopus Web of Science® Altmetric
Type: Journal article
Title: A combined numerical-experimental approach to analyzing fracture initiation and development in brittle rocks
Author: Kumar Verma, R.
Nguyen, G.D.
Karakus, M.
Taheri, A.
Bui, H.H.
Citation: Computers and Geotechnics, 2022; 145:104663-1-104663-18
Publisher: Elsevier BV
Issue Date: 2022
ISSN: 0266-352X
Statement of
Rupesh Kumar Verma, Giang D. Nguyen, Murat Karakus, Abbas Taheri Ha H. Bui
Abstract: This paper presents a combined numerical-experimental approach to investigating crack initiation and development in brittle rocks. A three-dimensional dis-continuum based numerical modeling technique is used where rock specimens are idealized as an assembly of deformable tetrahedral blocks interacting via cohesive-frictional contacts. A new cohesive-frictional contact model is developed and implemented in the software 3DEC by Itasca to capture realistic material behavior at grain scale under different loading conditions. The proposed cohesive- frictional contact model model is based on a unified damage-friction criterion that evolves with damage towards a frictional behavior, with effects of damage on dilation behavior to capture evolving contact conditions between rough surfaces. In conjunction with the numerical development are laboratory experiments using Digital Image Correlation (DIC) technique to provide experimental data to validate numerical simulation results at both specimen and local scales. The potentials of the proposed approach in capturing rock responses at both scales are demonstrated.
Keywords: Dis-continuum
Cohesive model
Rock fracture
Digital Image Correlation (DIC)
Rights: © 2022 Elsevier Ltd. All rights reserved
DOI: 10.1016/j.compgeo.2022.104663
Grant ID:
Appears in Collections:Civil and Environmental Engineering publications

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.