Numerical analysis and optimization of the residual stresses distribution induced by cold expansion technique

This paper presents a numerical investigation about the influence of mandrel shape on residual stresses induced by the cold expansion procedure. Thus, ball and tapered pin are used for cold expanding the plate. As, the entrance face presents the lowest residual stresses throughout the hole thickness...

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Main Authors: Abdelghani Baltach, Abdelkader Djebli, Mostefa Bendouba, El Hadj Besseghier, Abdelkrim Aid
Format: Article
Language:English
Published: Gruppo Italiano Frattura 2018-10-01
Series:Frattura ed Integrità Strutturale
Subjects:
Online Access:http://www.gruppofrattura.it/pdf/rivista/numero46/numero_46_art_23.pdf
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spelling doaj-c793e8fee7054131b2dfef24175fba2b2020-11-24T21:17:16ZengGruppo Italiano FratturaFrattura ed Integrità Strutturale1971-89932018-10-01124625226510.3221/IGF-ESIS.46.2310.3221/IGF-ESIS.46.23Numerical analysis and optimization of the residual stresses distribution induced by cold expansion techniqueAbdelghani BaltachAbdelkader DjebliMostefa BendoubaEl Hadj BesseghierAbdelkrim AidThis paper presents a numerical investigation about the influence of mandrel shape on residual stresses induced by the cold expansion procedure. Thus, ball and tapered pin are used for cold expanding the plate. As, the entrance face presents the lowest residual stresses throughout the hole thickness, we propose to solve this problem by varying the mandrel taper degree, instead of applying a double expansion. The obtained results show that the tapered pin is more suitable for the cold expansion. More, low taper increases the residual stresses at the entrance, reaching the values generated at the exit face.http://www.gruppofrattura.it/pdf/rivista/numero46/numero_46_art_23.pdfCold expansion Fastener hole Residual stress FEM method Taper degree.
collection DOAJ
language English
format Article
sources DOAJ
author Abdelghani Baltach
Abdelkader Djebli
Mostefa Bendouba
El Hadj Besseghier
Abdelkrim Aid
spellingShingle Abdelghani Baltach
Abdelkader Djebli
Mostefa Bendouba
El Hadj Besseghier
Abdelkrim Aid
Numerical analysis and optimization of the residual stresses distribution induced by cold expansion technique
Frattura ed Integrità Strutturale
Cold expansion
Fastener hole
Residual stress
FEM method
Taper degree.
author_facet Abdelghani Baltach
Abdelkader Djebli
Mostefa Bendouba
El Hadj Besseghier
Abdelkrim Aid
author_sort Abdelghani Baltach
title Numerical analysis and optimization of the residual stresses distribution induced by cold expansion technique
title_short Numerical analysis and optimization of the residual stresses distribution induced by cold expansion technique
title_full Numerical analysis and optimization of the residual stresses distribution induced by cold expansion technique
title_fullStr Numerical analysis and optimization of the residual stresses distribution induced by cold expansion technique
title_full_unstemmed Numerical analysis and optimization of the residual stresses distribution induced by cold expansion technique
title_sort numerical analysis and optimization of the residual stresses distribution induced by cold expansion technique
publisher Gruppo Italiano Frattura
series Frattura ed Integrità Strutturale
issn 1971-8993
publishDate 2018-10-01
description This paper presents a numerical investigation about the influence of mandrel shape on residual stresses induced by the cold expansion procedure. Thus, ball and tapered pin are used for cold expanding the plate. As, the entrance face presents the lowest residual stresses throughout the hole thickness, we propose to solve this problem by varying the mandrel taper degree, instead of applying a double expansion. The obtained results show that the tapered pin is more suitable for the cold expansion. More, low taper increases the residual stresses at the entrance, reaching the values generated at the exit face.
topic Cold expansion
Fastener hole
Residual stress
FEM method
Taper degree.
url http://www.gruppofrattura.it/pdf/rivista/numero46/numero_46_art_23.pdf
work_keys_str_mv AT abdelghanibaltach numericalanalysisandoptimizationoftheresidualstressesdistributioninducedbycoldexpansiontechnique
AT abdelkaderdjebli numericalanalysisandoptimizationoftheresidualstressesdistributioninducedbycoldexpansiontechnique
AT mostefabendouba numericalanalysisandoptimizationoftheresidualstressesdistributioninducedbycoldexpansiontechnique
AT elhadjbesseghier numericalanalysisandoptimizationoftheresidualstressesdistributioninducedbycoldexpansiontechnique
AT abdelkrimaid numericalanalysisandoptimizationoftheresidualstressesdistributioninducedbycoldexpansiontechnique
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