Contribution of computational mechanics in numerical simulation of machining and blanking: State-of-the-Art

Philippe Lorong (1) , Julien Yvonnet (1) , Gérard Coffignal (1) , Stéphanie Assouline-Cohen (1)

1 LMSP - Laboratoire de Mécanique des Systèmes et des Procédés

Blanking and machining are commonly used in processes to obtain the shape of many mechanical pieces. Although considerable number of experimental results exist, certain essential aspects of cutting are still not well understood. This comes from the complexity of the thermomechanical phenomena induced by the material separation as well as from the complexity of the dynamical behaviour of the whole workpiece/tool/machine system. Numerical simulations make it possible to go further in the comprehension and the prediction of machining and cutting processes. In this work the state-of-the art is analysed and we present the most recent developments in the contribution of computational mechanics to numerical simulation of machining and blanking. This contribution is, on one hand, developed at a very global scale calledmacroscopic scale. At this scale a representation of the deformations of the piece is necessary, for example when thin walls are present, and when both predictions of the geometrical state of final surface and/or stability of the process are expected. On the other hand, the contribution is also located at a more local scale: themesoscopic scale. At this scale, the aim is the determination of thermomechanical sollicitations applied to the tool, the simulation of chip formation, or the description of residual states (mechanical, chemical) inside the workpiece after machining.

Domaines: Mécanique [physics.med-ph]

Philippe Lorong, Julien Yvonnet, Gérard Coffignal, Stéphanie Assouline-Cohen. Contribution of computational mechanics in numerical simulation of machining and blanking: State-of-the-Art. Archives of Computational Methods in Engineering, 2006, 13 (1), pp.45-90. ⟨10.1007/BF02905931⟩. ⟨hal-00019220⟩