Reference : Poroelastic model parameter identification using artificial neural networks: on the e...

	Document type :	Scientific journals : Article
	Discipline(s) :	Engineering, computing & technology : Civil engineering Engineering, computing & technology : Computer science Engineering, computing & technology : Geological, petroleum & mining engineering Engineering, computing & technology : Mechanical engineering Engineering, computing & technology : Multidisciplinary, general & others
	Focus Areas :	Computational Sciences; Physics and Materials Science
	To cite this reference:	http://hdl.handle.net/10993/45256

Title :	Poroelastic model parameter identification using artificial neural networks: on the effects of heterogeneous porosity and solid matrix Poisson ratio
Language :	English
Author, co-author :	Dehghani, Hamidreza [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) >]
	Zilian, Andreas [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) >]
Publication date :	Sep-2020
Journal title :	Computational Mechanics
Publisher :	Springer
Volume :	66
Pages :	625-649
Peer reviewed :	Yes (verified by ORBilu)
Audience :	International
ISSN :	0178-7675
e-ISSN :	1432-0924
City :	New York
Country :	Germany
Keywords :	[en] Artificial neural network ; Multiscale and multiphysics problems ; Poroelastic media ; Material characterisation ; Data-driven computational mechanics
Abstract :	[en] Predictive analysis of poroelastic materials typically require expensive and time-consuming multiscale and multiphysics approaches, which demand either several simplifications or costly experimental tests for model parameter identification. This problem motivates us to develop a more efficient approach to address complex problems with an acceptable computational cost. In particular, we employ artificial neural network (ANN) for reliable and fast computation of poroelastic model parameters. Based on the strong-form governing equations for the poroelastic problem derived from asymptotic homogenisation, the weighted residuals formulation of the cell problem is obtained. Approximate solution of the resulting linear variational boundary value problem is achieved by means of the finite element method. The advantages and downsides of macroscale properties identification via asymptotic homogenisation and the application of ANN to overcome parameter characterisation challenges caused by the costly solution of cell problems are presented. Numerical examples, in this study, include spatially dependent porosity and solid matrix Poisson ratio for a generic model problem, application in tumour modelling, and utilisation in soil mechanics context which demonstrate the feasibility of the presented framework.
Research centres :	University of Luxembourg: Institute of Computational Engineering and Sciences
Funders :	Fonds National de la Recherche - FnR (PRIDE17/12252781) ; Luxembourg Ministry of Economy (FEDER 2018-04-024)
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/10993/45256
DOI :	10.1007/s00466-020-01868-4
Other URL :	https://doi.org/10.1007/s00466-020-01868-4
FnR project :	FnR ; FNR12252781 > Andreas Zilian > DRIVEN > Data-driven Computational Modelling And Applications > 01/09/2018 > 28/02/2025 > 2017

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