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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...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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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. |
format | Online Article Text |
id | pubmed-7866806 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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