Numerical analysis of rolled beam deformations subjected to heat straightening

Restoration of the steel structures by heat straightening process has a long history, but national studies in this field have not been reported yet. The physical nature of this process is thermo mechanical, and the most of conducted studies have included the empirical investigation of angular distor...

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Autores principales:	Behnam Shahrabi, Seyed Jalal Hemmati
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2019
Materias:	heat straightening process thermal-structural analysis plastic rotation vee and strip heating flame heating Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/cb97e9ab82d546f882e878af87707bf9
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spelling	oai:doaj.org-article:cb97e9ab82d546f882e878af87707bf92021-11-08T15:51:46ZNumerical analysis of rolled beam deformations subjected to heat straightening2476-39772538-261610.22065/jsce.2018.108868.1411https://doaj.org/article/cb97e9ab82d546f882e878af87707bf92019-12-01T00:00:00Zhttps://www.jsce.ir/article_62636_0023e6832c264b63f79dc29e978e511e.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616Restoration of the steel structures by heat straightening process has a long history, but national studies in this field have not been reported yet. The physical nature of this process is thermo mechanical, and the most of conducted studies have included the empirical investigation of angular distortions and mechanical deformations of structures and the restoration with the help of accelerators such as hydraulic jacks. In the present study, the numerical heat transfer and structural analysis of the process were carried out on an I-shaped cross section steel beam without application of external load. Oxy acetylene torch was considered as the heat source, and the Gaussian normal distribution model was used to model the input heat flux from flame to the beam surface. Three dimensional transient heat transfer and thermo elastic plastic deformations were analysed by finite element method in ANSYSTM software, and the results of thermo elastic plastic deformations were evaluated based on the amount of plastic rotation in the beam. Also role of the effective parameters such as supporting conditions, torch speed in different heating zones, heating dimensions and the path of torch movement on upper wing of the beam were studied. The results of numerical simulations carried out were in reasonable agreement with existing empirical data and showed the contribution of thermal deformation in the final deformations of the beam due to the non-application of external force.Behnam ShahrabiSeyed Jalal HemmatiIranian Society of Structrual Engineering (ISSE)articleheat straightening processthermal-structural analysisplastic rotationvee and strip heatingflame heatingBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 6, Iss 4, Pp 38-54 (2019)
institution	DOAJ
collection	DOAJ
language	FA
topic	heat straightening process thermal-structural analysis plastic rotation vee and strip heating flame heating Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	heat straightening process thermal-structural analysis plastic rotation vee and strip heating flame heating Bridge engineering TG1-470 Building construction TH1-9745 Behnam Shahrabi Seyed Jalal Hemmati Numerical analysis of rolled beam deformations subjected to heat straightening
description	Restoration of the steel structures by heat straightening process has a long history, but national studies in this field have not been reported yet. The physical nature of this process is thermo mechanical, and the most of conducted studies have included the empirical investigation of angular distortions and mechanical deformations of structures and the restoration with the help of accelerators such as hydraulic jacks. In the present study, the numerical heat transfer and structural analysis of the process were carried out on an I-shaped cross section steel beam without application of external load. Oxy acetylene torch was considered as the heat source, and the Gaussian normal distribution model was used to model the input heat flux from flame to the beam surface. Three dimensional transient heat transfer and thermo elastic plastic deformations were analysed by finite element method in ANSYSTM software, and the results of thermo elastic plastic deformations were evaluated based on the amount of plastic rotation in the beam. Also role of the effective parameters such as supporting conditions, torch speed in different heating zones, heating dimensions and the path of torch movement on upper wing of the beam were studied. The results of numerical simulations carried out were in reasonable agreement with existing empirical data and showed the contribution of thermal deformation in the final deformations of the beam due to the non-application of external force.
format	article
author	Behnam Shahrabi Seyed Jalal Hemmati
author_facet	Behnam Shahrabi Seyed Jalal Hemmati
author_sort	Behnam Shahrabi
title	Numerical analysis of rolled beam deformations subjected to heat straightening
title_short	Numerical analysis of rolled beam deformations subjected to heat straightening
title_full	Numerical analysis of rolled beam deformations subjected to heat straightening
title_fullStr	Numerical analysis of rolled beam deformations subjected to heat straightening
title_full_unstemmed	Numerical analysis of rolled beam deformations subjected to heat straightening
title_sort	numerical analysis of rolled beam deformations subjected to heat straightening
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2019
url	https://doaj.org/article/cb97e9ab82d546f882e878af87707bf9
work_keys_str_mv	AT behnamshahrabi numericalanalysisofrolledbeamdeformationssubjectedtoheatstraightening AT seyedjalalhemmati numericalanalysisofrolledbeamdeformationssubjectedtoheatstraightening
_version_	1718441701577588736

Numerical analysis of rolled beam deformations subjected to heat straightening

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