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Finite element analysis of cold pilgering using elastic roll dies
Dalarna University, School of Technology and Business Studies, Materials Technology. Luleå University of Technology, Department of Engineering Sciences and Mathematics.
Sandvik Materials Technology, R&D, Sandviken..
Sandvik Materials Technology, R&D, Sandviken..
Luleå University of Technology.
2017 (English)Conference paper, Published paper (Refereed)
Abstract [en]

A finite element model of cold pilgering with elastic roll dies have been developed and used to investigate the influence of roll die deformation on the material flow, contact region, roll separating force and tube dimensions. Full scale experiments were performed to validate the contact surface and tube dimensions. The results show that the influence of roll die flattening is not significant on the contact length. However, elastic deformation of roll die has strong influence on both the wall thickness reduction and roll separating force. Thus it is recommended to consider elasticity of roll dies when forces and tube dimensions are estimated.

Place, publisher, year, edition, pages
Elsevier, 2017.
Series
Procedia Engineering, ISSN 1877-7058 ; 2017
Keywords [en]
cold pilgering; cold forming; tube forming; roll flattening; contact length; roll separating force; finite element method; tool elasticity; tube dimension
National Category
Applied Mechanics
Research subject
Steel Forming and Surface Engineering
Identifiers
URN: urn:nbn:se:du-25901DOI: 10.1016/j.proeng.2017.10.1010OAI: oai:DiVA.org:du-25901DiVA, id: diva2:1136734
Conference
International Conference on the Technology of Plasticity, ICTP 2017, Cambridge, United Kingdom, 17-22 September 2017
Available from: 2017-08-29 Created: 2017-08-29 Last updated: 2017-12-18Bibliographically approved
In thesis
1. Modeling of Cold Pilgering of Tubes
Open this publication in new window or tab >>Modeling of Cold Pilgering of Tubes
2017 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Cold pilgering is a challenging tube forming process in terms of modeling due to the complexity in kinematic of tools, friction condition and material behavior. The process development has mostly been based on simple formulas and costly full-scale tryouts. The aim in this study is to develop validated Finite element models of cold pilgering to increase the understanding of influence of the process parameters on the produced tubes.

In the course of this thesis, three-dimensional mechanical and thermo-mechanical Finite element models of cold pilgering were developed. The commercial code MSC.Marc was used in the simulations. General 3D models are needed to be able to capture asymmetric deformation in cold pilgering. It was found that tool deflections together with elastic deformation of roll dies have considerable influence on the rolling force. Furthermore, the strain rate and temperature effects on the response of the material and thereby on the rolling force were evaluated.

Place, publisher, year, edition, pages
Luleå: Luleå University of Technology, 2017
Series
Licentiate thesis, ISSN 1402-1757
Keywords
Cold pilgering, finite element method, tube forming, tool elasticity, roll flattening
National Category
Applied Mechanics
Research subject
Steel Forming and Surface Engineering
Identifiers
urn:nbn:se:du-25902 (URN)978-91-7583-873-1 (ISBN)978-91-7583-872-4 (ISBN)
Presentation
2017-05-31, E130, Luleå tekniska universitet, Luleå, 10:25 (English)
Opponent
Supervisors
Available from: 2017-08-29 Created: 2017-08-29 Last updated: 2017-08-29Bibliographically approved

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Azizoğlu, Yağız

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • ieee
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  • vancouver
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More styles
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Output format
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