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Numerical Analysis of Axial Cyclic Behavior of FRP Retrofitted CHS Joints

This paper aims to numerically investigate the cyclic behavior of retrofitted and non-retrofitted circular hollow section (CHS) T-joints under axial loading. Different joints with varying ratios of brace to chord radius are studied. The effects of welding process on buckling instability of the joint...

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Detalles Bibliográficos
Autores principales: Alembagheri, Mohammad, Rashidi, Maria, Yazdi, Amin, Samali, Bijan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7866806/
https://www.ncbi.nlm.nih.gov/pubmed/33572522
http://dx.doi.org/10.3390/ma14030648
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author Alembagheri, Mohammad
Rashidi, Maria
Yazdi, Amin
Samali, Bijan
author_facet Alembagheri, Mohammad
Rashidi, Maria
Yazdi, Amin
Samali, Bijan
author_sort Alembagheri, Mohammad
collection PubMed
description This paper aims to numerically investigate the cyclic behavior of retrofitted and non-retrofitted circular hollow section (CHS) T-joints under axial loading. Different joints with varying ratios of brace to chord radius are studied. The effects of welding process on buckling instability of the joints in compression and the plastic failure in tension are considered. The finite element method is employed for numerical analysis, and the SAC protocol is considered as cyclic loading scheme. The CHS joints are retrofitted with different numbers of Fiber Reinforced Polymer (FRP) layers with varying orientation. The results show that the welding process significantly increases the plastic failure potential. The chord ovalization is the dominant common buckling mode under the compression load. However, it is possible to increase the energy dissipation of the joints by utilizing FRP composite through changing the buckling mode to the brace overall buckling.
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spelling pubmed-78668062021-02-07 Numerical Analysis of Axial Cyclic Behavior of FRP Retrofitted CHS Joints Alembagheri, Mohammad Rashidi, Maria Yazdi, Amin Samali, Bijan Materials (Basel) Article This paper aims to numerically investigate the cyclic behavior of retrofitted and non-retrofitted circular hollow section (CHS) T-joints under axial loading. Different joints with varying ratios of brace to chord radius are studied. The effects of welding process on buckling instability of the joints in compression and the plastic failure in tension are considered. The finite element method is employed for numerical analysis, and the SAC protocol is considered as cyclic loading scheme. The CHS joints are retrofitted with different numbers of Fiber Reinforced Polymer (FRP) layers with varying orientation. The results show that the welding process significantly increases the plastic failure potential. The chord ovalization is the dominant common buckling mode under the compression load. However, it is possible to increase the energy dissipation of the joints by utilizing FRP composite through changing the buckling mode to the brace overall buckling. MDPI 2021-01-31 /pmc/articles/PMC7866806/ /pubmed/33572522 http://dx.doi.org/10.3390/ma14030648 Text en © 2021 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Alembagheri, Mohammad
Rashidi, Maria
Yazdi, Amin
Samali, Bijan
Numerical Analysis of Axial Cyclic Behavior of FRP Retrofitted CHS Joints
title Numerical Analysis of Axial Cyclic Behavior of FRP Retrofitted CHS Joints
title_full Numerical Analysis of Axial Cyclic Behavior of FRP Retrofitted CHS Joints
title_fullStr Numerical Analysis of Axial Cyclic Behavior of FRP Retrofitted CHS Joints
title_full_unstemmed Numerical Analysis of Axial Cyclic Behavior of FRP Retrofitted CHS Joints
title_short Numerical Analysis of Axial Cyclic Behavior of FRP Retrofitted CHS Joints
title_sort numerical analysis of axial cyclic behavior of frp retrofitted chs joints
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7866806/
https://www.ncbi.nlm.nih.gov/pubmed/33572522
http://dx.doi.org/10.3390/ma14030648
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