Study of the Influence of Cutting Edge on Micro Cutting of Hardened Steel Using FE and SPH Modeling

Lobna Chaabani (1) , Romain Piquard (2) , Radouane Abnay (1) , Michaël Fontaine (1) , Alexandre Gilbin (1) , Philippe Picart (1) , Sébastien Thibaud (1) , Alain D’acunto (2) , Daniel Dudzinski (2)

1 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)
2 LEM3 - Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux

Micromachining allows the production of micro-components with complex geometries in various materials. However, it presents several scientific issues due to scale reduction compared to conventional machining. These issues are called size effects. At this level, micromachining experiments raise technical difficulties and significant costs. In this context, numerical modeling is widely used in order to study these different size effects. This article presents four different numerical models of micro-cutting of hardened steel, a Smooth Particle Hydrodynamics (SPH) model and three finite element (FE) models using three different formulations: Lagrangian, Arbitrary Eulerian-Lagrangian (ALE) and Coupled Eulerian-Lagrangian (CEL). The objective is to study the effect of tool edge radius on the micro-cutting process through the evolution of cutting forces, chip morphology and stress distribution in different areas and to compare the relevance of the different models. First, results obtained from two models using FE (Lagrangian) and SPH method were compared with experimental data obtained in previous work. It shows that the different numerical methods are relevant for studying geometrical size effects because cutting force and stress distribution correlate with experimental data. However, they present limits due to the calculation approaches. For a second time, this paper presents a comparison between the four different numerical models cited previously in order to choose which method of modeling can present the micro-cutting process.

Mots clés: Electrical and Electronic Engineering; Mechanical Engineering; Control and Systems Engineering; 41NiCrMo7 steel; ALE; CEL; SPH modeling; Chip morphology; Cutting edge radius; Cutting force; Finite element modeling; Micromachining; Electrical and Electronic Engineering; Electrical and Electronic Engineering; Electrical and Electronic Engineering

Domaines: Matériaux

Lobna Chaabani, Romain Piquard, Radouane Abnay, Michaël Fontaine, Alexandre Gilbin, et al.. Study of the Influence of Cutting Edge on Micro Cutting of Hardened Steel Using FE and SPH Modeling. Micromachines, 2022, 13 (7), ⟨10.3390/mi13071079⟩. ⟨hal-03864309⟩