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Computational modeling of hot rolling
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.
1996 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis consists of six papers on finite element simulations of the hot rolling of plates. Different friction and material models have been evaluated. The work includes both numerical simulation and experimental verification. It is shown that the constitutive model for the plate material is more important than the model for the friction between the rolled material and the rolls. It was also found that an explicit finite element method is more effective and easier to use than an implicit code. The models presented are one step towards a general and more complete computational model of flat rolling. They are not complete as they depend on a separate estimation of the roll bending. Otherwise, all three-dimensional aspects of the rolling process are included. The material models used work quite well for the simulation of the hot rolling operation. High accuracy is obtained for global quantities like rolling force and torque. A better material model would improve the prediction of the stress distribution in the rolled material. It should be able to describe the effect of rapidly changing strain rates and temperatures during deformation as well as recrystallization and thermal strains.

Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 1996. , 10 p.
Doctoral thesis / Luleå University of Technologyy… → 31 dec 1996, ISSN 0348-8373 ; 187
Research subject
Computer Aided Design; Material Mechanics
URN: urn:nbn:se:ltu:diva-25972Local ID: bfa3d3d0-f5a7-11db-ac79-000ea68e967bOAI: diva2:999130
Godkänd; 1996; 20070428 (ysko)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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