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Finite Element Modelling of Cold Pilgering óf Tubes
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.
Dalarna University.
Dalarna University.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.
Number of Authors: 4
2015 (English)In: Computational Plasticity XIII: Fundamentals and Applications - Proceedings of the 13th International Conference on Computational Plasticity - Fundamentals and Applications,held in Barcelona, Spain, 1-3 September 2015 / [ed] E. Oñate; D.R.J. Owen; D. Peric; M. Chiumenti, Barcelona: International Center for Numerical Methods in Engineering (CIMNE), 2015, 716-726 p.Conference paper (Refereed)
Abstract [en]

Cold pilgering is a cold forming process used during manufacturing of seamless tubes. The tube with a mandrel inside is fed forward and rotated in stepwise increments, while the roll stand moves back and forth. The total plastic deformation of the tube is such that the cross-sectional area of the tube decreases and the length of the tube increases during the process. However, this is performed in many small incremental steps, where the direction of deformation in a material point changes at each stroke. Most published models of cold pilgering use simplified material models. In reality, the flow stress is dependent on temperature, strain rate, strain history and microstructure. In this work, temperature and strain rate distributions are computed, using a 3D thermo-mechanical FE model, and the influence of temperature and strain rate on the rolling force is investigated. The Johnson-Cook model is employed to describe the flow stress using isotropic hardening. The results show that strain rate and temperature have a significant influence on the roll separation force

Place, publisher, year, edition, pages
Barcelona: International Center for Numerical Methods in Engineering (CIMNE), 2015. 716-726 p.
National Category
Materials Engineering
Research subject
Material Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-40526ISI: 000380573600069ScopusID: 2-s2.0-84992261190Local ID: fb3a73cd-20e7-4301-bd32-362df80d0902ISBN: 978-84-944244-6-5OAI: oai:DiVA.org:ltu-40526DiVA: diva2:1014048
Conference
International Conference on Computational Plasticity. Fundamentals and Applications : 01/09/2015 - 03/09/2015
Note

Validerad; 2016; Nivå 1 2016-10-06 (andbra)

Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2016-11-09Bibliographically approved

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Scopushttp://congress.cimne.com/complas2015/frontal/doc/EbookComplas2015.pdf

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