A finite element model of hot rolling is described. It is based upon the flow formulation, with a Norton-Hoff purely viscoplastic behavior. We use a steady state approach with free surface updating by minimizing the material flux through the surface. To compute stresses, smoothed derivatives of the velocity are obtained and the strain rate tensor and stress deviator computed from them. Then the pressure field is calculated by a least squares method on the residual of equilibrium equations. A simplified thermal transfer equation is obtained by neglecting internal conduction. Boundary conditions include a contact temperature accounting for a thermal contact resistance and heat generated by friction. Thermomechanical coupling is performed. It is applied to simulation of a multipass blooming sequence in order to evaluate metallurgical evolution of the product. The interest of stresses computation is demonstrated for predicting surface crack opening and closing in shape rolling, with comparison to experimental trends.
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August 1992
This article was originally published in
Journal of Engineering for Industry
Research Papers
A Coupled Thermomechanical Approach for Hot Rolling by a 3D Finite Element Method
P. Montmitonnet,
P. Montmitonnet
Ecole des Mines de Paris, Centre de Mise en Forme des Mate´riaux, BP 207, 06904 Sophia-Antipolis Cedex, France
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J. L. Chenot,
J. L. Chenot
Ecole des Mines de Paris, Centre de Mise en Forme des Mate´riaux, BP 207, 06904 Sophia-Antipolis Cedex, France
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C. Bertrand-Corsini,
C. Bertrand-Corsini
Ecole des Mines de Paris, Centre de Mise en Forme des Mate´riaux, BP 207, 06904 Sophia-Antipolis Cedex, France
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C. David,
C. David
Ecole des Mines de Paris, Centre de Mise en Forme des Mate´riaux, BP 207, 06904 Sophia-Antipolis Cedex, France
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T. Iung,
T. Iung
IRSID, BP 320 57214 Maizie`res-les-Metz, Cedex France
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P. Buessler
P. Buessler
IRSID, BP 320 57214 Maizie`res-les-Metz, Cedex France
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P. Montmitonnet
Ecole des Mines de Paris, Centre de Mise en Forme des Mate´riaux, BP 207, 06904 Sophia-Antipolis Cedex, France
J. L. Chenot
Ecole des Mines de Paris, Centre de Mise en Forme des Mate´riaux, BP 207, 06904 Sophia-Antipolis Cedex, France
C. Bertrand-Corsini
Ecole des Mines de Paris, Centre de Mise en Forme des Mate´riaux, BP 207, 06904 Sophia-Antipolis Cedex, France
C. David
Ecole des Mines de Paris, Centre de Mise en Forme des Mate´riaux, BP 207, 06904 Sophia-Antipolis Cedex, France
T. Iung
IRSID, BP 320 57214 Maizie`res-les-Metz, Cedex France
P. Buessler
IRSID, BP 320 57214 Maizie`res-les-Metz, Cedex France
J. Eng. Ind. Aug 1992, 114(3): 336-344
Published Online: August 1, 1992
Article history
Received:
June 1, 1990
Online:
April 8, 2008
Citation
Montmitonnet, P., Chenot, J. L., Bertrand-Corsini, C., David, C., Iung, T., and Buessler, P. (August 1, 1992). "A Coupled Thermomechanical Approach for Hot Rolling by a 3D Finite Element Method." ASME. J. Eng. Ind. August 1992; 114(3): 336–344. https://doi.org/10.1115/1.2899801
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