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Calibration and Validation of a Linear-Elastic Numerical Model for Timber Step Joints Based on the Results of Experimental Investigations

The paper is dedicated to the numerical analysis of a single-step joint, enabling the prediction of stiffness and failure modes of both single- and double-step joints. An experimental analysis of the geometrically simplest version, the single-step joint, serves as a reference for the calibration of...

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Autores principales: Braun, Matthias, Pełczyński, Jan, Al Sabouni-Zawadzka, Anna, Kromoser, Benjamin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8911061/
https://www.ncbi.nlm.nih.gov/pubmed/35268875
http://dx.doi.org/10.3390/ma15051639
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author Braun, Matthias
Pełczyński, Jan
Al Sabouni-Zawadzka, Anna
Kromoser, Benjamin
author_facet Braun, Matthias
Pełczyński, Jan
Al Sabouni-Zawadzka, Anna
Kromoser, Benjamin
author_sort Braun, Matthias
collection PubMed
description The paper is dedicated to the numerical analysis of a single-step joint, enabling the prediction of stiffness and failure modes of both single- and double-step joints. An experimental analysis of the geometrically simplest version, the single-step joint, serves as a reference for the calibration of the subsequent finite element model. The inhomogeneous and anisotropic properties of solid timber make detailed modelling computationally intensive and strongly dependent on the respective specimen. Therefore, the authors present a strategy for simplified but still appropriate modelling for the prediction of local failure at certain load levels. The used mathematical approach is based on the linear elasticity theory and orthotropic material properties. The finite element calculations are performed in the environment of the software Abaqus FEA. The calibrated numerical model shows a good conformity until first failures occur. It allows for a satisfactory quantification of the stiffness of the connection and estimation of the force when local failure begins and is, therefore, recommended for future, non-destructive research of timber connections of various shapes.
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spelling pubmed-89110612022-03-11 Calibration and Validation of a Linear-Elastic Numerical Model for Timber Step Joints Based on the Results of Experimental Investigations Braun, Matthias Pełczyński, Jan Al Sabouni-Zawadzka, Anna Kromoser, Benjamin Materials (Basel) Article The paper is dedicated to the numerical analysis of a single-step joint, enabling the prediction of stiffness and failure modes of both single- and double-step joints. An experimental analysis of the geometrically simplest version, the single-step joint, serves as a reference for the calibration of the subsequent finite element model. The inhomogeneous and anisotropic properties of solid timber make detailed modelling computationally intensive and strongly dependent on the respective specimen. Therefore, the authors present a strategy for simplified but still appropriate modelling for the prediction of local failure at certain load levels. The used mathematical approach is based on the linear elasticity theory and orthotropic material properties. The finite element calculations are performed in the environment of the software Abaqus FEA. The calibrated numerical model shows a good conformity until first failures occur. It allows for a satisfactory quantification of the stiffness of the connection and estimation of the force when local failure begins and is, therefore, recommended for future, non-destructive research of timber connections of various shapes. MDPI 2022-02-22 /pmc/articles/PMC8911061/ /pubmed/35268875 http://dx.doi.org/10.3390/ma15051639 Text en © 2022 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
Braun, Matthias
Pełczyński, Jan
Al Sabouni-Zawadzka, Anna
Kromoser, Benjamin
Calibration and Validation of a Linear-Elastic Numerical Model for Timber Step Joints Based on the Results of Experimental Investigations
title Calibration and Validation of a Linear-Elastic Numerical Model for Timber Step Joints Based on the Results of Experimental Investigations
title_full Calibration and Validation of a Linear-Elastic Numerical Model for Timber Step Joints Based on the Results of Experimental Investigations
title_fullStr Calibration and Validation of a Linear-Elastic Numerical Model for Timber Step Joints Based on the Results of Experimental Investigations
title_full_unstemmed Calibration and Validation of a Linear-Elastic Numerical Model for Timber Step Joints Based on the Results of Experimental Investigations
title_short Calibration and Validation of a Linear-Elastic Numerical Model for Timber Step Joints Based on the Results of Experimental Investigations
title_sort calibration and validation of a linear-elastic numerical model for timber step joints based on the results of experimental investigations
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8911061/
https://www.ncbi.nlm.nih.gov/pubmed/35268875
http://dx.doi.org/10.3390/ma15051639
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