The immersed-body gas-solid interaction model for blast analysis in fractured solid media

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Title: The immersed-body gas-solid interaction model for blast analysis in fractured solid media
Authors: Yang, P
Xiang, J
Chen, M
Fang, F
Pavlidis, D
Latham, J
Pain, C
Item Type: Journal Article
Abstract: Blast-induced fractures are simulated by a novel gas-solid interaction model, which combines an immersed-body method and a cohesive zone fracture model. The approach employs a finite element fluid model and a combined finite-discrete element solid model. This model is fully coupled and simulates the whole blasting process including gas pressure impulse, shock wave propagation, gas expansion, fragmentation and burden movement phases. In the fluid model, the John-Wilkins-Lee equation of state is introduced to resolve the relationship between pressure and density of the highly compressible gas in blasts and explosions. A Q-scheme is used to stabilise the model when solving extremely high pressure situations. Two benchmark tests, blasting cylinder and projectile fire, are used to validate this coupled model. The results of these tests are in good agreement with experimental data. To demonstrate the potential of the proposed method, a blasting engineering simulation with shock waves, fracture propagation, gas-solid interaction and flying fragments is simulated.
Issue Date: 24-Nov-2016
Date of Acceptance: 31-Oct-2016
URI: http://hdl.handle.net/10044/1/42303
DOI: http://dx.doi.org/10.1016/j.ijrmms.2016.10.006
ISSN: 1873-4545
Publisher: Elsevier
Start Page: 119
End Page: 132
Journal / Book Title: International Journal of Rock Mechanics and Mining Sciences
Volume: 91
Copyright Statement: © 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/).
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Commission of the European Communities
Engineering & Physical Science Research Council (E
Commission of the European Communities
Funder's Grant Number: EP/K003976/1
603663
EP/M012794/1
662157
Keywords: Mining & Metallurgy
0905 Civil Engineering
0914 Resources Engineering And Extractive Metallurgy
Publication Status: Published
Appears in Collections:Faculty of Engineering
Earth Science and Engineering



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