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On the Calibration of a Numerical Model for Concrete-to-Concrete Interface

The study was devoted to the numerical modelling of concrete-to-concrete interfaces. Such an interface can be found in many modern composite structures, so proper characterisation of its behaviour is of great importance. A strategy for calibration of a model based on cohesive finite elements and the...

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Autores principales: Dudziak, Sławomir, Jackiewicz-Rek, Wioletta, Kozyra, Zofia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8658101/
https://www.ncbi.nlm.nih.gov/pubmed/34885358
http://dx.doi.org/10.3390/ma14237204
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author Dudziak, Sławomir
Jackiewicz-Rek, Wioletta
Kozyra, Zofia
author_facet Dudziak, Sławomir
Jackiewicz-Rek, Wioletta
Kozyra, Zofia
author_sort Dudziak, Sławomir
collection PubMed
description The study was devoted to the numerical modelling of concrete-to-concrete interfaces. Such an interface can be found in many modern composite structures, so proper characterisation of its behaviour is of great importance. A strategy for calibration of a model based on cohesive finite elements and the elastic-damage traction–separation constitutive law available by default in the Abaqus code was proposed. Moreover, the default interface material model was enhanced with the user-field-variables subroutine to include a real strength envelope for such interfaces. Afterwards, the modelling approach was validated with numerical simulation of the most popular tests for determining the strength characteristics of concrete-to-concrete interfaces: three-point bending beam with a notch, splitting bi-material cubic specimens, and slant-shear tests. The results of own pilot studies were used as well as those reported by other researchers. The performed simulations proved the accuracy of the proposed modelling strategy (the mean ratio of ultimate forces obtained with numerical models and from experiments was equal to 1.01). Furthermore, the presented examples allowed us to better understand the basic test methods for concrete interfaces and the observed mechanisms of failure during them.
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spelling pubmed-86581012021-12-10 On the Calibration of a Numerical Model for Concrete-to-Concrete Interface Dudziak, Sławomir Jackiewicz-Rek, Wioletta Kozyra, Zofia Materials (Basel) Article The study was devoted to the numerical modelling of concrete-to-concrete interfaces. Such an interface can be found in many modern composite structures, so proper characterisation of its behaviour is of great importance. A strategy for calibration of a model based on cohesive finite elements and the elastic-damage traction–separation constitutive law available by default in the Abaqus code was proposed. Moreover, the default interface material model was enhanced with the user-field-variables subroutine to include a real strength envelope for such interfaces. Afterwards, the modelling approach was validated with numerical simulation of the most popular tests for determining the strength characteristics of concrete-to-concrete interfaces: three-point bending beam with a notch, splitting bi-material cubic specimens, and slant-shear tests. The results of own pilot studies were used as well as those reported by other researchers. The performed simulations proved the accuracy of the proposed modelling strategy (the mean ratio of ultimate forces obtained with numerical models and from experiments was equal to 1.01). Furthermore, the presented examples allowed us to better understand the basic test methods for concrete interfaces and the observed mechanisms of failure during them. MDPI 2021-11-25 /pmc/articles/PMC8658101/ /pubmed/34885358 http://dx.doi.org/10.3390/ma14237204 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Dudziak, Sławomir
Jackiewicz-Rek, Wioletta
Kozyra, Zofia
On the Calibration of a Numerical Model for Concrete-to-Concrete Interface
title On the Calibration of a Numerical Model for Concrete-to-Concrete Interface
title_full On the Calibration of a Numerical Model for Concrete-to-Concrete Interface
title_fullStr On the Calibration of a Numerical Model for Concrete-to-Concrete Interface
title_full_unstemmed On the Calibration of a Numerical Model for Concrete-to-Concrete Interface
title_short On the Calibration of a Numerical Model for Concrete-to-Concrete Interface
title_sort on the calibration of a numerical model for concrete-to-concrete interface
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8658101/
https://www.ncbi.nlm.nih.gov/pubmed/34885358
http://dx.doi.org/10.3390/ma14237204
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