Artificial intelligence - finite element method - hybrids for efficient nonlinear analysis of concrete structures
Realistic structural analyses and optimisations using the non-linear finite element method are possible today yet suffer from being very time-consuming, particularly in case of reinforced concrete plates and shells. Hence such investigations are currently dismissed in the vast majority of cases in p...
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Format: | Article |
Language: | English |
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CTU Central Library
2022-08-01
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Series: | Acta Polytechnica CTU Proceedings |
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Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/8386 |
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author | Michael A. Kraus Rafael Bischof Walter Kaufmann Karel Thoma |
author_facet | Michael A. Kraus Rafael Bischof Walter Kaufmann Karel Thoma |
author_sort | Michael A. Kraus |
collection | DOAJ |
description | Realistic structural analyses and optimisations using the non-linear finite element method are possible today yet suffer from being very time-consuming, particularly in case of reinforced concrete plates and shells. Hence such investigations are currently dismissed in the vast majority of cases in practice. The "Artificial Intelligence - Finite Element - Hybrids" project addresses the current unsatisfactory situation with an approach that combines non-linear finite element models for reinforced concrete shells with scientific machine learning algorithms to create hybrid AI-FEM models. The AI-based surrogate material model provides the material stiffness as well as the stress tensor for given concrete design parameters and the strain tensor. This paper reports on the current status of the project and findings of the calibration of the AI-based reinforced concrete material model. We successfully calibrated and evaluated k-nearest-neighbour, LGBM and ResNet algorithms and report their predictive capabilities. Finally, some light is shed on the future work of integrating the AI surrogate material models back into the finite element method in the course of the numerical analysis of reinforced concrete structures. |
first_indexed | 2024-04-12T21:10:45Z |
format | Article |
id | doaj.art-b38ff272a4fe4073a3db32237fbc7590 |
institution | Directory Open Access Journal |
issn | 2336-5382 |
language | English |
last_indexed | 2024-04-12T21:10:45Z |
publishDate | 2022-08-01 |
publisher | CTU Central Library |
record_format | Article |
series | Acta Polytechnica CTU Proceedings |
spelling | doaj.art-b38ff272a4fe4073a3db32237fbc75902022-12-22T03:16:36ZengCTU Central LibraryActa Polytechnica CTU Proceedings2336-53822022-08-01369910810.14311/APP.2022.36.00995626Artificial intelligence - finite element method - hybrids for efficient nonlinear analysis of concrete structuresMichael A. Kraus0Rafael Bischof1Walter Kaufmann2Karel Thoma3ETH Zürich, Institute of Structural Engineering (IBK), Chair for Concrete Structures and Bridge Design, Stefano-Franscini-Platz 5, CH-8093 Zürich, Switzerland; ETH Zürich, Center for Augmented Computational Design in Architecture, Engineering and Construction, Design++ Initiative and Immersive Design Lab, Stefano-Franscini-Platz 5, CH-8093 Zürich, SwitzerlandETH Zürich, Institute of Structural Engineering (IBK), Chair for Concrete Structures and Bridge Design, Stefano-Franscini-Platz 5, CH-8093 Zürich, SwitzerlandETH Zürich, Institute of Structural Engineering (IBK), Chair for Concrete Structures and Bridge Design, Stefano-Franscini-Platz 5, CH-8093 Zürich, Switzerland; ETH Zürich, Center for Augmented Computational Design in Architecture, Engineering and Construction, Design++ Initiative and Immersive Design Lab, Stefano-Franscini-Platz 5, CH-8093 Zürich, SwitzerlandETH Zürich, Institute of Structural Engineering (IBK), Chair for Concrete Structures and Bridge Design, Stefano-Franscini-Platz 5, CH-8093 Zürich, SwitzerlandRealistic structural analyses and optimisations using the non-linear finite element method are possible today yet suffer from being very time-consuming, particularly in case of reinforced concrete plates and shells. Hence such investigations are currently dismissed in the vast majority of cases in practice. The "Artificial Intelligence - Finite Element - Hybrids" project addresses the current unsatisfactory situation with an approach that combines non-linear finite element models for reinforced concrete shells with scientific machine learning algorithms to create hybrid AI-FEM models. The AI-based surrogate material model provides the material stiffness as well as the stress tensor for given concrete design parameters and the strain tensor. This paper reports on the current status of the project and findings of the calibration of the AI-based reinforced concrete material model. We successfully calibrated and evaluated k-nearest-neighbour, LGBM and ResNet algorithms and report their predictive capabilities. Finally, some light is shed on the future work of integrating the AI surrogate material models back into the finite element method in the course of the numerical analysis of reinforced concrete structures.https://ojs.cvut.cz/ojs/index.php/APP/article/view/8386concrete material modelmachine and deep learningnonlinear finite element methodsurrogate modelinguncertainty quantification |
spellingShingle | Michael A. Kraus Rafael Bischof Walter Kaufmann Karel Thoma Artificial intelligence - finite element method - hybrids for efficient nonlinear analysis of concrete structures Acta Polytechnica CTU Proceedings concrete material model machine and deep learning nonlinear finite element method surrogate modeling uncertainty quantification |
title | Artificial intelligence - finite element method - hybrids for efficient nonlinear analysis of concrete structures |
title_full | Artificial intelligence - finite element method - hybrids for efficient nonlinear analysis of concrete structures |
title_fullStr | Artificial intelligence - finite element method - hybrids for efficient nonlinear analysis of concrete structures |
title_full_unstemmed | Artificial intelligence - finite element method - hybrids for efficient nonlinear analysis of concrete structures |
title_short | Artificial intelligence - finite element method - hybrids for efficient nonlinear analysis of concrete structures |
title_sort | artificial intelligence finite element method hybrids for efficient nonlinear analysis of concrete structures |
topic | concrete material model machine and deep learning nonlinear finite element method surrogate modeling uncertainty quantification |
url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/8386 |
work_keys_str_mv | AT michaelakraus artificialintelligencefiniteelementmethodhybridsforefficientnonlinearanalysisofconcretestructures AT rafaelbischof artificialintelligencefiniteelementmethodhybridsforefficientnonlinearanalysisofconcretestructures AT walterkaufmann artificialintelligencefiniteelementmethodhybridsforefficientnonlinearanalysisofconcretestructures AT karelthoma artificialintelligencefiniteelementmethodhybridsforefficientnonlinearanalysisofconcretestructures |