Analysis of torsion test by the finite element method

Analysis of torsion test by the finite element method

Zbigniew Gronostajski

Wroclaw University of Science and Technology ­.

DOI:

https://doi.org/10.7494/cmms.2002.2.0023

Abstract:

Various conversion methods of torque and angle of rotation to flow stress and strain are presented in the paper. These methods were verified in mathematical modelling using the finite element method. Performed investigations show that the coefficient of strain rate is the most important parameter, which is not properly implemented in currently used methods. The paper presents the results of thermo-mechanical modelling of torsion test. It is concluded on the basis of the results that temperature of the sample rises very fast when strains rate is above 1 s-1. Determined temperature distribution in cross section and in longitudinal section indicates that heat is transferred mainly into handles.

Cite as:

Gronostajski, Z. (2002). Analysis of torsion test by the finite element method. Computer Methods in Materials Science, 2(2-3), 46 – 54. https://doi.org/10.7494/cmms.2002.2.0023

Article (PDF):

Keywords:

,

References:

Choquet, P., Le Bon, A., Rossard, C., Pedrix, C., Joannes, G. (1988). The hot torsion testing at IRSID. Application to the simulation and modelling of hot forming processes, THERMEC, wyd. IRSID, Tokyo, 1988, 1-8.

Gronostajski, Z. (2000a). Modele konstytutywne opisujace zachowanie się wybranych stopów miedzi w zakresie duzych odkształceń plastycznych. Prace Naukowe ITMiA PWr Nr 75, Seria Monografie, nr 23, Wrocław.

Gronostajski, Z. (2000b). Symulacja MES rozkładu temperatury w skręcanych próbkach. Mat. 7 Konf: KomPlasTech’2000, ed., Kusiak, J., Pietrzyk, M., Grosman, F., Piela, A., Krynica-Czarny Potok, 247-254.

Gronostajski, Z., Hadasik, E., Schindler, I. (2002). Analiza próby skręcania na gorąco metodą elementów skończonych. Mar. 9 Konf. KomPlasTech’2002, ed., Pietrzyk, M., Kusiak, J., Grosman, F., Piela, A., Szczawnica, 103-108.

Grosman, F. (1976). Niejednorodność odkształcania na długości skręcanej próbki. Obróbka Plastyczna Metali, 15, 203-206.

Grosman, F., Hadasik, E. (1994). Problems of application of the technological plasticity description of metals in computer programmes for analysis and design of mechanical working processes. Archv. Metall., 39, 263-276.

Grosman, F., Hadasik, E., Sajdak, C. (1994). Rozszerzenie możliwości badawczych krajowych plastometrów skrętnych. /nż. Mater., 15, 77-80.

Kuzman, R. (1964). 7Toplinske tablice i dijagrami. Technicka Knjiga, Zagrzeb.

Kliber, J., Schindler, J., Kubiński, W., Kużmiński, Z. (1989). Bestimmung des Grenzumformgrades mit dem Torsionversuch. Steel Research, 60, 503-508.

Kusiak, J., Kawalla, R., Pietrzyk, M., Pircher, H. (1996). Inverse analysis applied to the evaluation of material parameters in the history dependent flow stress equation in hot forming of metals. J. Mat. Proc. Technol., 60, 455-461.

Lahoti, G.D., Altan, T. (1975). Prediction of temperature distributions in axisymmetric compression and torsion. J. Eng. Mater. Technol, 113-120.

Pietrzyk, M., Lenard, J.G. (1991). Thermal-mechanical modelling of the flat rolling process. Springer-Verlag, Heildelberg.

Pietrzyk, M., Hodgson, P.D. (1998). Internal variable model applied to the prediction of grain size during thermomechanical processing of C-Mn steel. /nż. Mater, 19, 645-650.

Smithells, C. J. (1955). Metals reference book. wyd. Butterworths Sc. Publication, London.

Szeliga, D., Pietrzyk, M. (2002). Identification of Rheological and Tribological Parameters. Metal Forming Science and Practice, A State-of-the-art Volume in Honour of Professor J.A. Schey’s 80th Birthday, ed., Lenard J.G., Elsevier, Amsterdam, 227-258.

Venugopal, S., Sprinivansan, G., Venkadesam, S., Seetharaman, V, 1989, An examination of the relative merits of the compression test and torsion test for the prediction of peak pressured during the extrusion of commercial purity titanium, J. Mech. Working Technol., 19, 151-163. A