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Finite Element Analysis of cold pilgering using elastic roll dies
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Material- och solidmekanik.
Sandvik Materials Technology, R&D, Sandviken.
Sandvik Materials Technology, R&D, Sandviken.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Material- och solidmekanik.ORCID-id: 0000-0002-2544-9168
2017 (engelsk)Inngår i: Procedia Engineering, ISSN 1877-7058, E-ISSN 1877-7058, Vol. 207, s. 2370-2375Artikkel i tidsskrift (Fagfellevurdert) Published
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.

sted, utgiver, år, opplag, sider
Elsevier, 2017. Vol. 207, s. 2370-2375
Emneord [en]
cold pilgering, cold forming, tube forming, roll flattening, contact length, roll separating force, finite element method, tool elasticity, tube dimension
HSV kategori
Forskningsprogram
Materialmekanik
Identifikatorer
URN: urn:nbn:se:ltu:diva-62938DOI: 10.1016/j.proeng.2017.10.1010Scopus ID: 2-s2.0-85036627374OAI: oai:DiVA.org:ltu-62938DiVA, id: diva2:1087519
Konferanse
International Conference on the Technology of Plasticity, ICTP 2017, Cambridge, United Kingdom, 17-22 September 2017
Merknad

Konferensartikel i tidskrift

Tilgjengelig fra: 2017-04-07 Laget: 2017-04-07 Sist oppdatert: 2019-09-12bibliografisk kontrollert
Inngår i avhandling
1. Modeling of Cold Pilgering of Tubes
Åpne denne publikasjonen i ny fane eller vindu >>Modeling of Cold Pilgering of Tubes
2017 (engelsk)Licentiatavhandling, med artikler (Annet vitenskapelig)
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.

sted, utgiver, år, opplag, sider
Luleå: Luleå university of technology, 2017
Serie
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757
Emneord
Cold pilgering, finite element method, tube forming, tool elasticity, roll flattening
HSV kategori
Forskningsprogram
Materialmekanik
Identifikatorer
urn:nbn:se:ltu:diva-62941 (URN)978-91-7583-872-4 (ISBN)978-91-7583-873-1 (ISBN)
Presentation
2017-05-31, E130, Luleå tekniska universitet, Luleå, 10:00 (engelsk)
Opponent
Veileder
Tilgjengelig fra: 2017-04-12 Laget: 2017-04-07 Sist oppdatert: 2019-06-04bibliografisk kontrollert

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