Naslov
Radial Stress in Cold Backward Extrusion: Upper Bound and Analytical Solution

Autori
Plančak, Miroslav ; Barišić, Branimir ; Vilotić, Dragiša ; Lužanin, Ognjen

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of International Conference on Innovative Technologies IN-TECH / Kudlaček, Jan ; Barišić, Branimir ; Velay, Xavier ; Ohkura, Kazuhiro - Prag : Tisk AS Jaroměř, 2010, 14-19

ISBN
978-80-904502-2-6

Skup
International Conference on Innovative Technologies IN-TECH 2010

Mjesto i datum
Prag, Češka Republika, 14.09.2010. - 16.09.2010

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Hladno izvlačenje; Radijalno naprezanje; UBET; analitičko rješenje
(Cold extrusion; Radial stress; UBET; Analytical solution)

Sažetak
Current paper gives insight into intensity and distribution of the radial contact stress between the die – container and workpiece in cold backward extrusion. Methods applied in the investigations were Upper Bound and analytical solution. Upper Bound method is based upon the extremum principles of the fon Mises theory of plasticity. The value of load and other process parameters can be obtained by defining the kinematically admissible velocity field in different zones of the workpiece material. Upon this principles UBET (Upper Bound Elemental Technique) approach , which is used in this paper, has been developed. Analytical solution is based on double upsetting process (in axial and radial direction), introduced by Dipper. Obtained results are analyzed and compared. Suggestions for further work are given.

Izvorni jezik
Engleski

Znanstvena područja
Metalurgija, Računarstvo, Strojarstvo

POVEZANOST RADA