Abstract
Materials cutting during machining is an extremely complex thermo-mechanical problem due to the severe physical conditions associated to materials cutting mechanisms : very high elasto-viscoplastic strains and strain rates; material passes from room temperature to the heated state in milliseconds, with the heat coming from internal dissipation and friction. Based on continuum thermomechanics and including friction and large deformations in dynamics with viscoplasticity, a materials cutting three-dimensional numerical model is briefly described. Weak forms of conservation laws are introduced in an Arbitrary Lagrangian Eulerian configuration allowing for an arbitrary surface of separation of the material, and an automatic and continuous rezoning. The Coulomb friction law is introduced to model the tool-chip and workpiece-tool contacts, and heat generation and heat transfer at these interfaces are taken into account. The flow stress including temperature and strain rate effects is based on the Johnson-Cook law proposed for high strain rate conditions. A three-dimensional example is shown when simulating the oblique cutting. Finally, some needs for the future are detailed to improve constitutive laws as well as friction, and to include more physics, for example chemical diffusion in workpiece and tool.
Keywords
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Caroll, J. T.; Strenkowski, J. S.; “Finite element models of orthogonal cutting with application to single point diamond turning”. International Journal of Mechanical Sciences, Vol. 30, No12, pp. 899–920.
Donea, J.; Giuliani, S.; and Halleux, J. P.; “An Arbitrary Lagrangian-Eulerian finite element method for transient dynamic fluid-structure Interactions”. Computer Methods in Applied Mechanics and Engineering, Vol. 33, pp. 689–723.
Ehmann, K. F.; Kapoor, S. G.; DeVor, R. E.; Lazoglu, I.; “Machining process modeling”. ASME-Journal of Manufacturing Science and Engineering, Vol. 119, pp. 655–663.
Germain, P.; Mécanique. Ellipses-Paris, 1986.
Johnson, R.; Cook, W. K.; “A constitutive model and data for metals subjected to large strains, high strain rates and high temperatures”. In Proceedings 7th International Symposium on Ballistics, The Hague, pp. 541–547.
Joyot, P.; Rakotomalala, R.; Pantalé, O.; Touratier, M.; and Hakem, N.; “A numerical simulation of steady state metal cutting”. Journal of Mechanical Engineering Science, Vol. 212, pp. 331–341.
Lemonds, J.; Needleman, A.; “Finite element analysis of shear localization in rate and temperature dependent solids”. Mechanics of Materials, Vol. 5, pp. 339–361.
Marusich, T. D.; Ortiz, M.; “Modelling and simulation of high-speed machining”. International Journal for Numerical Methods in Engineering, Vol. 38, pp. 3675–3694.
Oancea, V. G.; Laursen, A.; “A finite element formulation of thermomechanical rate-dependent friction sliding”. International Journal for Numerical Methods in Engineering, Vol. 40, pp. 4275–4311.
Pantalé, O.; Rakotomalala, R.; Touratier, M.; “An ALE three-dimensional model of orthogonal and oblique metal cutting processes”. International Journal of Forming Processes, Vol. 1, No3, pp. 371–389.
Rakotomalala, R.; Joyot, P.; Touratier, M.; “Arbitrary Lagrangian-Eulerian thermomechanical finite element model of material cutting”. Communications in Numerical Methods in Engineering, Vol. 9, No3, pp. 975–987.
Sekhon, G. S.; Chenot, J. L.; “Numerical simulation of continuous chip formation during non-steady orthogonal cutting”. Engineering Computations, Vol. 10, pp. 31–48.
Soua, A.; Touratier, M.; Polac, L.; “Computations of an engine to analyse cylinder distorsion”. Engineering Computations, Vol. 16, No1, pp. 9–25.
Touratier, M.; “Computational models of chip formation and chip flow in machining in a multi-scale approach. Present status and future needs”. In Proceedings of the International Workshop on Modeling of Machining Operations, Nantes, pp. 1–29.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2000 Kluwer Academic Publishers
About this chapter
Cite this chapter
Lorong, P., Pantale, O., Rakotomalala, R., Touratier, M. (2000). A 3D-Numerical Thermomechanical Approach for Materials Cutting. In: Maugin, G.A., Drouot, R., Sidoroff, F. (eds) Continuum Thermomechanics. Solid Mechanics and Its Applications, vol 76. Springer, Dordrecht. https://doi.org/10.1007/0-306-46946-4_21
Download citation
DOI: https://doi.org/10.1007/0-306-46946-4_21
Publisher Name: Springer, Dordrecht
Print ISBN: 978-0-7923-6407-8
Online ISBN: 978-0-306-46946-6
eBook Packages: Springer Book Archive