Formulation and application of 3D THM-coupled zero-thickness interface elements

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Title: Formulation and application of 3D THM-coupled zero-thickness interface elements
Authors: Cui, W
Potts, DM
Zdravković, L
Gawecka, KA
Tsiampousi, A
Item Type: Journal Article
Abstract: Interface elements are frequently employed in finite element (FE) analyses to represent soil-structure interfaces or rock joints. The modelling of coupled thermo-hydro-mechanical (THM) problems in geotechnical engineering requires equally a coupled and robust THM formulation for interface elements. This paper presents such a formulation which is capable of reproducing the coupled THM behaviour of discontinuities and soil-structure boundaries, and is compatible with other types of finite elements used to discretise the soil and structural domains (e.g. solid and shell elements). The coupled THM three-dimensional (3D) zero-thickness interface element is implemented into the bespoke FE code employed in this research and its features are verified using a number of numerical exercises. To demonstrate their performance, the proposed interface elements are employed in the simulation of the coupled THM behaviour of a fissured triaxial sample subjected to a thermal load and the influence of the presence of fissures on soil behaviour is presented.
Issue Date: 1-Dec-2019
Date of Acceptance: 5-Aug-2019
ISSN: 0266-352X
Publisher: Elsevier BV
Start Page: 1
End Page: 11
Journal / Book Title: Computers and Geotechnics
Volume: 116
Copyright Statement: © 2019 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence
Sponsor/Funder: Geotechnical Consulting Group
Funder's Grant Number: CISM_P60087
Keywords: 0905 Civil Engineering
0914 Resources Engineering and Extractive Metallurgy
0915 Interdisciplinary Engineering
Geological & Geomatics Engineering
Publication Status: Published online
Embargo Date: 2020-08-09
Article Number: 103204
Online Publication Date: 2019-08-09
Appears in Collections:Civil and Environmental Engineering

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