Analysis of stress distribution in caliber rolling by the energy method using finite-element division

Authors
Citation
K. Komori et K. Kato, Analysis of stress distribution in caliber rolling by the energy method using finite-element division, J MATER PR, 117(1-2), 2001, pp. 201-208
Citations number
9
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
ISSN journal
0924-0136 → ACNP
Volume
117
Issue
1-2
Year of publication
2001
Pages
201 - 208
Database
ISI
SICI code
0924-0136(20011102)117:1-2<201:AOSDIC>2.0.ZU;2-G
Abstract
The authors previously proposed an energy method using finite-element divis ion and applied it to the analysis of the flow of material. In this work, t he authors develop this method further to obtain the stress distribution in caliber rolling. Recently, Tomita obtained the stress distribution using t he grid method so that the equilibrium condition may be satisfied approxima tely, whereas Mori evaluated the accuracy of the result obtained by the rig id-plastic finite-element method, by considering the equivalent nodal force which is assumed to be in equilibrium. Hence, the authors combined these m ethods and applied them to determine the stress distribution. The following results were obtained. First, in the flat rolling of bars, the roll force agrees well with the theoretical equation proposed by Saito. Second, in squ are-diamond rolling and round-oval rolling, the roll force depends on the r atio of the indirectly reduced area in the cross-section to the area of the cross-section. Finally, in square-oval rolling, the roll force agrees with the theoretical equation proposed by Saito when the projected material-rol l contact length is replaced by the mean projected material-roll contact le ngth in the width direction. (C) 2001 Published by Elsevier Science B.V.