Numerical and experimental analysis of residual stress and plastic strain distributions in machined stainless steel

Naoufel Ben Moussa (1) , Habib Sidhom (1) , Chedly Braham (2)

1 ESSTT - Ecole Supérieure des Sciences et Techniques [Tunis]
2 PIMM - Laboratoire Procédés et Ingénierie en Mécanique et Matériaux

In this study, a numerical approach has been developed to predict the near surface residual stresses and plastic strain resulting from turning in orthogonal cutting configuration. This approach is based on the Arbitrary Lagrangian-Eulerian (ALE) formulation using the commercial finite element code Abaqus-Explicit. The coefficients of the used material behavior law and friction model required for the simulation are identified experimentally in this study. The simulated results are validated by experiments carried out on AISI 316L stainless steel. Using this method, the effect of the depth of cut (Doc) and the cutting speed (Vc) on the surface properties has been established. The simulated residual stress gradient resulting from machining has been experimentally validated by X-ray diffraction measurements. The simulated plastic strain gradient has been validated by an experimental microhardness-strain relationship established in this study.

Mots clés: Surface properties; Residual stress; Numerical simulation; Machining; Plastic strain

Domaines: Matériaux

Naoufel Ben Moussa, Habib Sidhom, Chedly Braham. Numerical and experimental analysis of residual stress and plastic strain distributions in machined stainless steel. International Journal of Mechanical Sciences, 2012, 64 (1), pp.82-93. ⟨10.1016/j.ijmecsci.2012.07.011⟩. ⟨hal-02390617⟩