Proceedings of the Rocscience International Conference (RIC 2023)

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Elastoplastic Discretized Virtual Internal Bond Model and Its Application to Dynamic Fracture Simulation in Rock

Authors
Dina Kon1, *, Alphonse Kakanda2, Dave Mbako2, Shu Jisen3
1School of Mines, China University of Mining & Technology, Xuzhou, Jiangsu, China
2School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, China
3State Key Laboratory of Resources and Mine Safety, China University of Mining & Technology, Xuzhou, Jiangsu, China
*Corresponding author. Email: dinakon25@gmail.com
Corresponding Author
Dina Kon
Available Online 8 November 2023.
DOI
10.2991/978-94-6463-258-3_66How to use a DOI?
Keywords
Plastic deformation; lattice model; plastic fracture; modified Stillinger-Weber potential; discretized virtual internal bond
Abstract

Failure of a material is always accompanied by plastic deformation and fracturing processes. Continuum plastic mechanics can handle plastic deformation effectively when it employs a yield function and the flow rule. As a result of its inability to account for the microstructure of the material, the continuum mechanics method has some drawbacks when addressing the fracture problem. The lattice model can simulate the fracture problem quite well, but it is insufficient for plastic deformation. The aim of this paper is to embed the modified Stillinger-Weber potential in the discretized virtual internal bond (SW-DVIB) in order to simulate the plastic deformation and fracture at the bond level. In the original DVIB, the interaction between particles in a cell is characterized by an interatomic bond potential, which intrinsically contains the microfracture mechanism. Nevertheless, because the interatomic potential only accounts for the effect of the bond stretch, the Poisson ratio it represents is fixed. To remedy this drawback, the plasticity is embedded into the modified Stillinger-Weber potential, and the elastoplastic SW-DVIB is developed so that it can simulate the elastoplastic fracture and deformation in the solid with different Poisson ratios. The simulation results show that the method can simulate the fracture behaviors and the plastic deformation with accuracy because it is based on the discrete lattice structure of the elastoplastic SW-DVIB and is efficient in dealing with the model-induced fracture propagation problem.

Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the Rocscience International Conference (RIC 2023)
Series
Atlantis Highlights in Engineering
Publication Date
8 November 2023
ISBN
978-94-6463-258-3
ISSN
2589-4943
DOI
10.2991/978-94-6463-258-3_66How to use a DOI?
Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Dina Kon
AU  - Alphonse Kakanda
AU  - Dave Mbako
AU  - Shu Jisen
PY  - 2023
DA  - 2023/11/08
TI  - Elastoplastic Discretized Virtual Internal Bond Model and Its Application to Dynamic Fracture Simulation in Rock
BT  - Proceedings of the Rocscience International Conference  (RIC 2023)
PB  - Atlantis Press
SP  - 720
EP  - 730
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-258-3_66
DO  - 10.2991/978-94-6463-258-3_66
ID  - Kon2023
ER  -