Reference : Poroelastic model parameter identification using artificial neural networks: on the e...
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Computational Sciences; Physics and Materials Science
http://hdl.handle.net/10993/45256
Poroelastic model parameter identification using artificial neural networks: on the effects of heterogeneous porosity and solid matrix Poisson ratio
English
Dehghani, Hamidreza mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) >]
Zilian, Andreas mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) >]
Sep-2020
Computational Mechanics
Springer
66
625-649
Yes (verified by ORBilu)
International
0178-7675
1432-0924
New York
Germany
[en] Artificial neural network ; Multiscale and multiphysics problems ; Poroelastic media ; Material characterisation ; Data-driven computational mechanics
[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.
University of Luxembourg: Institute of Computational Engineering and Sciences
Fonds National de la Recherche - FnR (PRIDE17/12252781) ; Luxembourg Ministry of Economy (FEDER 2018-04-024)
Researchers ; Professionals ; Students
http://hdl.handle.net/10993/45256
10.1007/s00466-020-01868-4
https://doi.org/10.1007/s00466-020-01868-4
FnR ; FNR12252781 > Andreas Zilian > DRIVEN > Data-driven Computational Modelling And Applications > 01/09/2018 > 28/02/2025 > 2017

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