A novel thermo-mechanical coupling approach for thermal fracturing of rocks in the three-dimensional FDEM
File(s)Joulin2020_Article_ANovelThermo-mechanicalCouplin.pdf (2.48 MB)
Published version
Author(s)
Joulin, Clement
Xiang, Jiansheng
Latham, John-Paul
Type
Journal Article
Abstract
This paper presents a new three-dimensional thermo-mechanical (TM) coupling approach for thermal fracturing of rocks in the finite–discrete element method (FDEM). The linear thermal expansion formula is implemented in the context of FDEM according to the concept of the multiplicative split of the deformation gradient. The presented TM formulation is derived in the geo-mechanical solver, enabling thermal expansion and thermally induced fracturing. This TM approach is validated against analytical solutions of the Cauchy stress, thermal expansion and stress distribution. Additionally, the thermal load on the previously validated configurations is increased and the resulting fracture initiation and propagation are observed. Finally, simulation results of the cracking of a reinforced concrete structure under thermal stress are compared to experimental results. Results are in excellent agreement.
Date Issued
2020-10-01
Date Acceptance
2020-02-05
Citation
Computational Particle Mechanics, 2020, 7, pp.935-946
ISSN
2196-4378
Publisher
Springer (part of Springer Nature)
Start Page
935
End Page
946
Journal / Book Title
Computational Particle Mechanics
Volume
7
Copyright Statement
© The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Natural Environment Research Council (NERC)
Svensk Karnbranslehantering AB
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000518059700001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
GR/S42699/01
NE/L000660/1
21136
Subjects
Science & Technology
Physical Sciences
Technology
Mathematics, Interdisciplinary Applications
Mechanics
Mathematics
Thermo-mechanical (TM)
Finite element method (FEM)
Discrete element method (DEM)
Finite-discrete element method (FDEM)
Thermal cracking
Explicit method
Fracture model
PARTICLE MODEL
ELEMENT-METHOD
CRACKING
SIMULATION
PILLAR
DAMAGE
Publication Status
Published
Date Publish Online
2020-03-03