Effect of Heat Flux on Creep Stresses of Thick-Walled Cylindrical Pressure Vessels

Assuming that the thermo-creep response of the material is governed by Norton’s law, an analytical solution ispresented for the calculation of time-dependent creep stresses and displacements of homogeneous thick-walledcylindrical pressure vessels. For the stress analysis in a homogeneous pressure ve...

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Detalles Bibliográficos
Autores: Kashkoli, Mosayeb Davoudi, Nejad, Mohammad Zamani
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2014
País:México
Institución:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
Repositorio:Journal of Applied Research and Technology
Idioma:inglés
OAI Identifier:oai:ojs2.localhost:article/218
Acceso en línea:https://jart.icat.unam.mx/index.php/jart/article/view/218
Access Level:acceso abierto
Palabra clave:Thick Cylindrical Pressure Vessel
Time-Dependent
Creep
Heat Flux
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spelling Effect of Heat Flux on Creep Stresses of Thick-Walled Cylindrical Pressure VesselsKashkoli, Mosayeb DavoudiNejad, Mohammad ZamaniThick Cylindrical Pressure VesselTime-DependentCreepHeat FluxAssuming that the thermo-creep response of the material is governed by Norton’s law, an analytical solution ispresented for the calculation of time-dependent creep stresses and displacements of homogeneous thick-walledcylindrical pressure vessels. For the stress analysis in a homogeneous pressure vessel, having material creepbehavior, the solutions of the stresses at a time equal to zero (i.e. the initial stress state) are needed. Thiscorresponds to the solution of materials with linear elastic behavior. Therefore, using equations of equilibrium, stressstrainand strain-displacement, a differential equation for displacement is obtained and then the stresses at a timeequal to zero are calculated. Using Norton’s law in the multi-axial form in conjunction with the above-mentionedequations in the rate form, the radial displacement rate is obtained and then the radial, circumferential and axial creepstress rates are calculated. When the stress rates are known, the stresses at any time are calculated iteratively. Theanalytical solution is obtained for the conditions of plane strain and plane stress. The thermal loading is as follows:inner surface is exposed to a uniform heat flux, and the outer surface is exposed to an airstream. The heat conductionequation for the one-dimensional problem in polar coordinates is used to obtain temperature distribution in thecylinder. The pressure, inner radius and outer radius are considered constant. Material properties are considered asconstant. Following this, profiles are plotted for the radial displacements, radial stress, circumferential stress and axialstress as a function of radial direction and time.Universidad Nacional Autónoma de México2014-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPeer-reviewed Articleapplication/pdfhttps://jart.icat.unam.mx/index.php/jart/article/view/21810.1016/S1665-6423(14)71637-2Journal of Applied Research and Technology; Vol. 12 No. 3Journal of Applied Research and Technology; Vol. 12 Núm. 32448-67361665-642310.22201/icat.24486736e.2014.12.3reponame:Journal of Applied Research and Technologyinstname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICOinstacron:UNAMenghttps://jart.icat.unam.mx/index.php/jart/article/view/218/215Copyright (c) 2018 Journal of Applied Research and Technologyinfo:eu-repo/semantics/openAccessoai:ojs2.localhost:article/2182024-08-16T17:54:13Z
dc.title.none.fl_str_mv Effect of Heat Flux on Creep Stresses of Thick-Walled Cylindrical Pressure Vessels
title Effect of Heat Flux on Creep Stresses of Thick-Walled Cylindrical Pressure Vessels
spellingShingle Effect of Heat Flux on Creep Stresses of Thick-Walled Cylindrical Pressure Vessels
Kashkoli, Mosayeb Davoudi
Thick Cylindrical Pressure Vessel
Time-Dependent
Creep
Heat Flux
title_short Effect of Heat Flux on Creep Stresses of Thick-Walled Cylindrical Pressure Vessels
title_full Effect of Heat Flux on Creep Stresses of Thick-Walled Cylindrical Pressure Vessels
title_fullStr Effect of Heat Flux on Creep Stresses of Thick-Walled Cylindrical Pressure Vessels
title_full_unstemmed Effect of Heat Flux on Creep Stresses of Thick-Walled Cylindrical Pressure Vessels
title_sort Effect of Heat Flux on Creep Stresses of Thick-Walled Cylindrical Pressure Vessels
dc.creator.none.fl_str_mv Kashkoli, Mosayeb Davoudi
Nejad, Mohammad Zamani
author Kashkoli, Mosayeb Davoudi
author_facet Kashkoli, Mosayeb Davoudi
Nejad, Mohammad Zamani
author_role author
author2 Nejad, Mohammad Zamani
author2_role author
dc.subject.none.fl_str_mv Thick Cylindrical Pressure Vessel
Time-Dependent
Creep
Heat Flux
topic Thick Cylindrical Pressure Vessel
Time-Dependent
Creep
Heat Flux
description Assuming that the thermo-creep response of the material is governed by Norton’s law, an analytical solution ispresented for the calculation of time-dependent creep stresses and displacements of homogeneous thick-walledcylindrical pressure vessels. For the stress analysis in a homogeneous pressure vessel, having material creepbehavior, the solutions of the stresses at a time equal to zero (i.e. the initial stress state) are needed. Thiscorresponds to the solution of materials with linear elastic behavior. Therefore, using equations of equilibrium, stressstrainand strain-displacement, a differential equation for displacement is obtained and then the stresses at a timeequal to zero are calculated. Using Norton’s law in the multi-axial form in conjunction with the above-mentionedequations in the rate form, the radial displacement rate is obtained and then the radial, circumferential and axial creepstress rates are calculated. When the stress rates are known, the stresses at any time are calculated iteratively. Theanalytical solution is obtained for the conditions of plane strain and plane stress. The thermal loading is as follows:inner surface is exposed to a uniform heat flux, and the outer surface is exposed to an airstream. The heat conductionequation for the one-dimensional problem in polar coordinates is used to obtain temperature distribution in thecylinder. The pressure, inner radius and outer radius are considered constant. Material properties are considered asconstant. Following this, profiles are plotted for the radial displacements, radial stress, circumferential stress and axialstress as a function of radial direction and time.
publishDate 2014
dc.date.none.fl_str_mv 2014-06-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://jart.icat.unam.mx/index.php/jart/article/view/218
10.1016/S1665-6423(14)71637-2
url https://jart.icat.unam.mx/index.php/jart/article/view/218
identifier_str_mv 10.1016/S1665-6423(14)71637-2
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://jart.icat.unam.mx/index.php/jart/article/view/218/215
dc.rights.none.fl_str_mv Copyright (c) 2018 Journal of Applied Research and Technology
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2018 Journal of Applied Research and Technology
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad Nacional Autónoma de México
publisher.none.fl_str_mv Universidad Nacional Autónoma de México
dc.source.none.fl_str_mv Journal of Applied Research and Technology; Vol. 12 No. 3
Journal of Applied Research and Technology; Vol. 12 Núm. 3
2448-6736
1665-6423
10.22201/icat.24486736e.2014.12.3
reponame:Journal of Applied Research and Technology
instname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
instacron:UNAM
instname_str UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
instacron_str UNAM
institution UNAM
reponame_str Journal of Applied Research and Technology
collection Journal of Applied Research and Technology
repository.name.fl_str_mv
repository.mail.fl_str_mv
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