Please use this identifier to cite or link to this item:
Title: Extension of three-dimensional discontinuous deformation analysis to frictional-cohesive materials
Authors: Zhang, H
Liu, SG
Chen, GQ
Zheng, L
Zhang, YB
Wu, YQ
Jing, PD
Wang, W
Han, Z
Zhong, GH
Lou, S
Issue Date: 2016
Source: International journal of rock mechanics and mining sciences, 2016, v. 86, p. 65-79
Abstract: This paper extends three-dimensional discontinuous deformation analysis (3-D DDA) to model the frictional-cohesive failure behavior of geotechnical materials and structures. Firstly, a new contact detection scheme was developed to successfully identify the dominant sub-contacts and areas of the joints between arbitrarily shaped polyhedral blocks. Secondly, a modified joint contact model subjected to the Mohr-Coulomb failure criteria based on distributed cohesion instead of concentrated cohesion, was proposed to ensure the accuracy of the simulation by 3-D DDA. Thirdly, the extended 3-D DDA was verified by three examples, including joint contact detection, critical stability and failure mode of a system of polyhedral blocks. Finally, the complete failure process involving large displacement and rotation of multiple interaction blocks is exhibited dynamically. Overall, these examples exhibit that the extended 3-D DDA is now capable of accurately modeling the failure behavior of frictional-cohesive materials and structures, so as to optimize the material and structure stabilization or protection design.
Keywords: 3-D DDA
Contact theory
Critical stability
Entrance plane
Failure mode
Joint cohesion
Publisher: Pergamon Press
Journal: International journal of rock mechanics and mining sciences 
ISSN: 1365-1609
EISSN: 1873-4545
DOI: 10.1016/j.ijrmms.2016.03.021
Appears in Collections:Journal/Magazine Article

View full-text via PolyU eLinks SFX Query
Show full item record


Last Week
Last month
Citations as of Sep 6, 2020


Last Week
Last month
Citations as of Sep 19, 2020

Page view(s)

Last Week
Last month
Citations as of Sep 20, 2020

Google ScholarTM



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