Simulation of Chatter in Cold Rolling Strip using Finite Element Method

Document Type : Research Article

Authors

Abstract

Chatter is a particular case of self-excited vibrations, which arise in rolling operations because of the interaction between the structural dynamics of the mill stand and dynamics of the rolling process. The model presented here has two sub models one for structure of the mill and the other for the rolling process. The structure of a mill stand modeled as a system of linear spring and lumped masses in order to simulation the interaction between the rolls.
In this paper, to analyze the chatter vibration a dynamic model of cold rolling process using finite element method (FEM) is considered. The influence of rolling parameters such as rolling speed, reduction and friction coefficient on chatter vibration is investigated and it was showed that the possibility of chatter onset increased by raising the rolling velocity and decrease friction coefficient. Predicted values of the model are in good agreement with that of the experiments as well as the values obtained by other researchers.

Keywords

References

[1] Roberts, W. L.; “Cold Rolling of steel”, Marcel Dekker, New york, 1978.
[2] Yun, I.; Wilson, W. R. D.; Ehmann, K.F.; “Review of Chatter studies in cold rolling”, International Journal of
Machine Tools and Manufacture, Vol. 38, p.p. 1499-1530, 1998.
[3] Gallenstein, J.H.; “Torsional chatter on a 4-h cold mill”, AISE Year Book, p.p. 60–65, 1981.
[4] Nieb, J.; Nicolas, V.: “Automated monitoring and control of vibration and chatter in rolling processes”, Iron and
Steel Engineer, p.p. 33–42, 1991.
[5] Misonoh, K.: “Analysis of chattering in cold rolling of steel strip”, Journal of the JSTP, vol. 21, p.p. 1006–1010,
1980.
[6] Nessler, G.L.; Cory, J.F.; “Cause and solution of fifth octave backup roll chatter on 4-h cold mills and temper
mills”, Iron and Steel Engineer, p.p. 482–486, 1989.
[7] Yun, I.; “Chatter in Cold Rolling”, Ph.D. thesis, Northwestern University, Evanston, Illinois, 1995.
[8] Tamiya, T.; Furui, K.; Iida, H.; “Analysis of chattering phenomenon in cold rolling”, Proceedings of
International Conference on Steel Rolling, ISIJ, Tokyo,p.p. 1191–1202, 1980.
[9] Chefneux, L.; Fischbach, J. P.; Gouzou, J.; “Study and Control of Chatter in Cold Rolling”, Iron and Steel
Engineer, p.p. 17-26, 1982.
[10] Johnson, R. E.; Qi, Q.; “Chatter dynamics in sheet rolling”. Int. J. Mech. Sci, p.p. 617-630, 1994.
[11] Guo, R. M.; Urso, A.C.; “Analysis of chatter vibration phenomena of rolling mills using finite element method”,
Iron and Steel Engineer, p.p. 29–39, 2001.
[12] Hu, P. H.; Ehmann K.F.; “Five octave mode chatter in rolling”, Proc. Inst. Mech. Engrs., vol. 215, 2000.
[13] تویسرکانی، ح؛ شکل دادن فلزات، انتشارات دانشگاه صنعتی. اصفهان، اصفهان، 1382
[14] Kimura, Y.; Sodani, Y.; “Analysis of Chatter in Tandem Cold Rolling Mills, ISIJ International”, vol. 33, p.p.77-84, 2003.
Amirkabir Journal of Mechanical Engineering
Volume 42, Issue 1 - Serial Number 1
September 2011
Pages 89-97

Files

Share

How to cite

Statistics