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An improved continuum-based finite–discrete element method with intra-element fracturing algorithm

Min Wang, Ke Gao, Yuntian Feng Orcid Logo

Computer Methods in Applied Mechanics and Engineering, Volume: 384, Start page: 113978

Swansea University Author: Yuntian Feng Orcid Logo

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DOI (Published version): 10.1016/j.cma.2021.113978

Abstract

This work develops a continuum-based combined finite–discrete element method (FDEM) in the framework of the explicit finite element method in conjunction with fracture algorithms. To account for complex fracturing processes, both shear failure and tensile failure criteria are implemented. Furthermor...

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Published in: Computer Methods in Applied Mechanics and Engineering
ISSN: 0045-7825
Published: Elsevier BV 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa57023
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spelling 2021-09-01T21:13:14.8572355 v2 57023 2021-06-03 An improved continuum-based finite–discrete element method with intra-element fracturing algorithm d66794f9c1357969a5badf654f960275 0000-0002-6396-8698 Yuntian Feng Yuntian Feng true false 2021-06-03 CIVL This work develops a continuum-based combined finite–discrete element method (FDEM) in the framework of the explicit finite element method in conjunction with fracture algorithms. To account for complex fracturing processes, both shear failure and tensile failure criteria are implemented. Furthermore, to investigate the effect of different fracture algorithms on the accuracy and computational efficiency of simulations, both the inter-element and intra-element fracture algorithms are developed in the continuum-based framework. Then, they are compared by two benchmark tests, of rock: the Brazilian tests and uniaxial tension tests. Besides, uniaxial compression tests under different loading rates are carried out to demonstrate the shear failure criterion and the corresponding fracture algorithm.The simulation results converge with the decrease of element sizes in the inter-element fracture algorithm. The intra-element fracture algorithm is proven to be more efficient and accurate in the simulation of fracturing processes compared to the inter-element fracture algorithm. Journal Article Computer Methods in Applied Mechanics and Engineering 384 113978 Elsevier BV 0045-7825 Finite element method; Discrete element method; Smeared fracture model; Intra-element fracture; Strain softening 1 10 2021 2021-10-01 10.1016/j.cma.2021.113978 http://dx.doi.org/10.1016/j.cma.2021.113978 COLLEGE NANME Civil Engineering COLLEGE CODE CIVL Swansea University 2021-09-01T21:13:14.8572355 2021-06-03T13:47:47.3307265 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering Min Wang 1 Ke Gao 2 Yuntian Feng 0000-0002-6396-8698 3 57023__20056__46dea60f2d3f4408b3ed34366011a699.pdf 57023.pdf 2021-06-03T13:49:23.7423097 Output 5709376 application/pdf Accepted Manuscript true 2022-06-21T00:00:00.0000000 ©2021 All rights reserved. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND) true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
title An improved continuum-based finite–discrete element method with intra-element fracturing algorithm
spellingShingle An improved continuum-based finite–discrete element method with intra-element fracturing algorithm
Yuntian Feng
title_short An improved continuum-based finite–discrete element method with intra-element fracturing algorithm
title_full An improved continuum-based finite–discrete element method with intra-element fracturing algorithm
title_fullStr An improved continuum-based finite–discrete element method with intra-element fracturing algorithm
title_full_unstemmed An improved continuum-based finite–discrete element method with intra-element fracturing algorithm
title_sort An improved continuum-based finite–discrete element method with intra-element fracturing algorithm
author_id_str_mv d66794f9c1357969a5badf654f960275
author_id_fullname_str_mv d66794f9c1357969a5badf654f960275_***_Yuntian Feng
author Yuntian Feng
author2 Min Wang
Ke Gao
Yuntian Feng
format Journal article
container_title Computer Methods in Applied Mechanics and Engineering
container_volume 384
container_start_page 113978
publishDate 2021
institution Swansea University
issn 0045-7825
doi_str_mv 10.1016/j.cma.2021.113978
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering
url http://dx.doi.org/10.1016/j.cma.2021.113978
document_store_str 1
active_str 0
description This work develops a continuum-based combined finite–discrete element method (FDEM) in the framework of the explicit finite element method in conjunction with fracture algorithms. To account for complex fracturing processes, both shear failure and tensile failure criteria are implemented. Furthermore, to investigate the effect of different fracture algorithms on the accuracy and computational efficiency of simulations, both the inter-element and intra-element fracture algorithms are developed in the continuum-based framework. Then, they are compared by two benchmark tests, of rock: the Brazilian tests and uniaxial tension tests. Besides, uniaxial compression tests under different loading rates are carried out to demonstrate the shear failure criterion and the corresponding fracture algorithm.The simulation results converge with the decrease of element sizes in the inter-element fracture algorithm. The intra-element fracture algorithm is proven to be more efficient and accurate in the simulation of fracturing processes compared to the inter-element fracture algorithm.
published_date 2021-10-01T04:12:26Z
_version_ 1763753849319849984
score 11.017797

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