UPPER-BOUND ANALYSIS OF THE EXTRUSION OF A BAR OF CHANNEL SECTION FROM SQUARE RECTANGULAR BILLETS THROUGH SQUARE DIES/

Authors
SAHOO SK KAR PK SINGH KC
Citation
Sk. Sahoo et al., UPPER-BOUND ANALYSIS OF THE EXTRUSION OF A BAR OF CHANNEL SECTION FROM SQUARE RECTANGULAR BILLETS THROUGH SQUARE DIES/, Journal of materials processing technology, 75(1-3), 1998, pp. 75-80
Citations number
12
Categorie Soggetti
Material Science","Engineering, Manufacturing","Engineering, Industrial
Journal title
Journal of materials processing technology → ACNP
ISSN journal
09240136
Volume
75
Issue
1-3
Year of publication
1998
Pages
75 - 80
Database
ISI
SICI code
0924-0136(1998)75:1-3<75:UAOTEO>2.0.ZU;2-R
Abstract
In this study, an upper-bound analysis is presented for the extrusion of bars of channel section from square/rectangular billets through rou gh square dies. A class of kinematically admissible discontinuous velo city fields, based on the reformulated SERR technique, is examined and the velocity field giving the lowest upper-bound is identified. This velocity fields is used to compute the upper-bound extrusion pressure for various area reductions. (C) 1998 Elsevier Science S.A.