Numerical modeling of extrusion of profiles with application of dislocation density as an internal variable in the rheological material model

by

Numerical modeling of extrusion of profiles with application of dislocation density as an internal variable in the rheological material model

Andrij Milenin

Czestochowa University of Technology.

DOI:

https://doi.org/10.7494/cmms.2002.1.0020

Abstract:

The problem of the simulation of rheological properties of metals is considered at numerical modeling processes of profile extrusion with high extrusion ratio. The existing ways of the mathematical description of rheological properties of metal at extrusion are limited with maximum achievable values at deformation tests and opportunity of the account of dynamic processes of hardening and recovery. The laws of development of dislocation density as factor determining rheological properties of an alloy at extrusion are using as possible alternative. The integration of received rheological equations in mathematical model three-dimensional forming of metal is executed at extrusion, based on a finite element method. The advantages of offered models are shown with reference to tasks of extrusion of profiles.

Cite as:

Milenin, A. (2002). Numerical modeling of extrusion of profiles with application of dislocation density as an internal variable in the rheological material model. Computer Methods in Materials Science, 2(1), 26 – 33. https://doi.org/10.7494/cmms.2002.1.0020

Article (PDF):

Keywords:

,

References:

Anderson, K., Kivivuori, S. (1997). Modeling a copper extrusion process of a D-profile using a 2D and 3D FE-program. The Baltic Sea Metal Forming and Cutting Seminar, Politechnika Warszwska, Warszawa, 5/1-5/10.

Bergstrom, Y. (1960). Mat. Sci. Eng., 193.

Cottrell, A.H. (1958). Dislokacii i plasticzeskoe teczenie w kristallach. Metallurgizdat, Moskwa.

Ermanok, M.Z., Fejgin, W.I., Sukhorukow, N.A. (1977). Pressowanie profilej iz aluminiewych splawow. Metallurgija, Moskwa.

Henzel, A., Spittel, T. (1982). Rasczet energosilowych parametrow w processach obrabotki metallow dawleniem. Metallurgija, Moskwa.

Iluszyn, A.A. (1948). Plasticznost. Moskwa, Gostechteorizdat.

Kaczanow, L.M. (1960). Teoria polzuczesti. Moskwa, Fizmatgiz.

Lepin, G.F. (1957). K staticzeskoj teorii polzuczesti i relaksacji. /zwestija AN SSSR, ONT, nr 9, 134-136.

Levanov, A.N. (1989). Obchie zakonomernosti granichnogo trenija pri obrabotke metallow dawleniem i sowerchenctwovanie technologicheskich processow na ih osnowe. Sverdlowsk, UPI.

Lishnij, A.I., Biba, N.V., Milenin, A.A. (1998). Two levels approach to the problem of extrusion optimisation // Simulation of Materials Processing: Theory. Methods and Applications. Proceedings of the 7 Int. Conf. On Numerical Methods in Industrial Forming Processes. – Enschede (Netherlands).- P, 627-631.

Luce, R., Wolske, M., Aretz, H., Kopp, R. (2000). Microstructure multi pass rolling simulation using physical models integrated into FEM. Mat. 2nd Europ. Conf. Rolling 2000, Vasteras, 218-226.

Milenin, A.A. (1998a). Matematiczeskoje modelirowanie trechmernych technologiczeskich processow plasticzeskogo deformirowanija metallow. Mat. Konf. Nauka, proizwodstwo, predprinimatelstwo – razvitiju metallurgii, Donieck, 84-89.

Milenin, A.A. (1998b). Rasczet trechmernogo teczenija metalla pri pressowanii profilej. w: Problemy wyczislitelnoj mechaniki i procznosti konstrukcij, Nawczalna knyga, Dniepropietrowsk, t.3, 86-93.

Milenin, A.A., Danchenko, U.V. (1999). Proektirowanie matric dla ekstruzii profilej iz aluminiewych splawow. Metall i litje Ukrainy, 11-12, 36-38.

Oding, I.A., Lepin, G.F. (1959). Opredelenie charakteristik deformacji po kriwym polzuczesti i relaksacji naprjazenij. Metallowedenie i termiczeskaja obrabotka metallow, nr 4, 2-8.

Ordon, J., Kuziak, R., Pietrzyk, M. (2000). History Dependent Constitutive Law for Austenitic Steels. Mat. 8th Int. Conf. Metal Forming 2000, ed., Pietrzyk, M., Kusiak, J., Majta, J., Hartley, P., Pillinger, I., Krakow, Wydawn. A.A. BALKE- MA, 747-753.

Pietrzyk, M. (1999). Modeling of hot metal forming in the conditions of variable strain rates and temperatures. Eng. Transactions, 47, 321-337.

Pozdejew, A.A., Tarnowskij, W.I., Jeremejew, W.I. (1965). O perspektiwach primienienija teorij polzuczesti i nasledstwiennosti k rasczetu processow obrabotki metallow dawlenijem. Izwiestija WY Zow, Czernaja metallurgia, nr 11, 62-68. Pozdejew, A.A., Tarnowskij, W.I., Jeremejew, W.I., Baakaszwili, 1973, Primienienije teorii polzuczesti pri obrabotkie metallow dawlenijem, Metallurgija, Moskwa.

Svensson, T. (1984). Obrazowanie dislokacij w czistom aluminii pri kwazistaticzeskom udarnom nagrużenii. w: Udarnie wolny i jawlenija wysokoskorostnoj deformacii metallow, ed., M.A. Mejers i L.E. Murr, Metallurgija, Moskwa, 164-176.

Vazquez, V., Walters, J., Altan, T. (1999). Simulation von Schmiedeprozessen. Stand der Technik in den USA, Mat. Symp. Neuere Entwicklungen in der Massivumfomung, Stuttgart, 1999, 139-160.