Investigation of Thermal Stress Distribution in Laser Spot Welding Process

The objective of this paper was to study the laser spot welding process of low carbon steel sheet. The investigations were based on analytical and finite element analyses. The analytical analysis was focused on a consistent set of equations representing interaction of the laser beam with materials....

Descripción completa

Guardado en:

Detalles Bibliográficos
Autor principal:	Osamah F. Abdulateef
Formato:	article
Lenguaje:	EN
Publicado:	Al-Khwarizmi College of Engineering – University of Baghdad 2009
Materias:	Laser-spot welding Residual stress Non-linear thermal stress. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/b72ee030bc5e4868a5cfa825f9b1e8a5
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:b72ee030bc5e4868a5cfa825f9b1e8a5
record_format	dspace
spelling	oai:doaj.org-article:b72ee030bc5e4868a5cfa825f9b1e8a52021-12-02T01:52:26ZInvestigation of Thermal Stress Distribution in Laser Spot Welding Process1818-1171https://doaj.org/article/b72ee030bc5e4868a5cfa825f9b1e8a52009-01-01T00:00:00Zhttp://www.iasj.net/iasj?func=fulltext&aId=2255https://doaj.org/toc/1818-1171The objective of this paper was to study the laser spot welding process of low carbon steel sheet. The investigations were based on analytical and finite element analyses. The analytical analysis was focused on a consistent set of equations representing interaction of the laser beam with materials. The numerical analysis based on 3-D finite element analysis of heat flow during laser spot welding taken into account the temperature dependence of the physical properties and latent heat of transformations using ANSYS code V.10.0 to simulate the laser welding process. The effect of laser operating parameters on the results of the temperature profile were studied in addition to the effect on thermal stresses and dimensions of the laser welded workpiece which showed good correlations between analytical and numerical results. It was found that the temperature gradients during laser welding are usually very large and it was viewed that very high temperature at the center of the workpiece, and is decreased very significantly as propagating along the radial direction. Also it found that the thermal residual stresses around the laser spot due to plastic strains were very small and localized within 1.0 mm range. It is concluded that the laser welding process is effective to reduce the welding residual stress. The stresses along the lateral direction of the workpiece changed from compression at the spot under the laser beam and tension away from the spot at the end of welding to tension at the spot under the laser beam and compression away from the spot when it cooled, which are in a good agreement with the published results. Osamah F. AbdulateefAl-Khwarizmi College of Engineering – University of BaghdadarticleLaser-spot weldingResidual stressNon-linear thermal stress.Chemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 5, Iss 1, Pp 33-41 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	Laser-spot welding Residual stress Non-linear thermal stress. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Laser-spot welding Residual stress Non-linear thermal stress. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 Osamah F. Abdulateef Investigation of Thermal Stress Distribution in Laser Spot Welding Process
description	The objective of this paper was to study the laser spot welding process of low carbon steel sheet. The investigations were based on analytical and finite element analyses. The analytical analysis was focused on a consistent set of equations representing interaction of the laser beam with materials. The numerical analysis based on 3-D finite element analysis of heat flow during laser spot welding taken into account the temperature dependence of the physical properties and latent heat of transformations using ANSYS code V.10.0 to simulate the laser welding process. The effect of laser operating parameters on the results of the temperature profile were studied in addition to the effect on thermal stresses and dimensions of the laser welded workpiece which showed good correlations between analytical and numerical results. It was found that the temperature gradients during laser welding are usually very large and it was viewed that very high temperature at the center of the workpiece, and is decreased very significantly as propagating along the radial direction. Also it found that the thermal residual stresses around the laser spot due to plastic strains were very small and localized within 1.0 mm range. It is concluded that the laser welding process is effective to reduce the welding residual stress. The stresses along the lateral direction of the workpiece changed from compression at the spot under the laser beam and tension away from the spot at the end of welding to tension at the spot under the laser beam and compression away from the spot when it cooled, which are in a good agreement with the published results.
format	article
author	Osamah F. Abdulateef
author_facet	Osamah F. Abdulateef
author_sort	Osamah F. Abdulateef
title	Investigation of Thermal Stress Distribution in Laser Spot Welding Process
title_short	Investigation of Thermal Stress Distribution in Laser Spot Welding Process
title_full	Investigation of Thermal Stress Distribution in Laser Spot Welding Process
title_fullStr	Investigation of Thermal Stress Distribution in Laser Spot Welding Process
title_full_unstemmed	Investigation of Thermal Stress Distribution in Laser Spot Welding Process
title_sort	investigation of thermal stress distribution in laser spot welding process
publisher	Al-Khwarizmi College of Engineering – University of Baghdad
publishDate	2009
url	https://doaj.org/article/b72ee030bc5e4868a5cfa825f9b1e8a5
work_keys_str_mv	AT osamahfabdulateef investigationofthermalstressdistributioninlaserspotweldingprocess
_version_	1718402862679064576

Investigation of Thermal Stress Distribution in Laser Spot Welding Process

Ejemplares similares