Development of a numerical model for the understanding of the chip formation in high-pressure water-jet assisted machining

Yessine Ayed (1) , Camille Robert (1) , Guénaël Germain (1) , Amine Ammar (2, 3)

1 LAMPA - PMD - Laboratoire des Arts et Métiers ParisTech d'Angers - Procédés Matériaux Durabilité
2 LAMPA - Laboratoire Angevin de Mécanique, Procédés et InnovAtion
3 Université de Tunis

The aim of this study is to develop a new numerical cutting model that includes fluid structure interaction and to take into account heat transfer between the water-jet, the workpiece and the chip. This has been achieved using a CEL (Coupled–Eulerian–Lagrangian) technique, an algorithm has been developed to ensure heat exchange between the fluid and the structure. This new model allows decoupling of the mechanical and the thermal effects of the water-jet on chip formation and fragmentation. It has been demonstrated that fragmentation of the chip is ensured by the combination of the thermal and the mechanical effects of the water-jet. Moreover, the tool rake temperature is reduced by more than 400 °C, the tool/chip contact length is also decreased by about 30%.

Mots clés: Assisted machining; Chip formation; Fluid/structure interaction; High-pressure water-jet; Titanium alloys

Domaines: Génie des procédés

Yessine Ayed, Camille Robert, Guénaël Germain, Amine Ammar. Development of a numerical model for the understanding of the chip formation in high-pressure water-jet assisted machining. Finite Elements in Analysis and Design, 2016, 108, pp.1-8. ⟨10.1016/j.finel.2015.09.003⟩. ⟨hal-01224932⟩