Improvement of the numerical modeling in orthogonal dry cutting of an AISI 316L stainless steel by the introduction of a new friction model

Abstract

A better understanding of friction modeling is required to lead to more realistic finite element models (FEMs) of machining process. This work proposes to evaluate the performance of a new friction model depending on the local sliding velocity, compared to a standard approach considering a constant Coulomb friction coefficient. A finite element model, based on the Arbitrary Lagrangian–Eulerian (ALE) approach, was developed for orthogonal machining. This model has been applied to the investigation of an AISI 316L stainless steel in dry cutting. It has been shown that the material removal is very sensitive to the friction model. The flow of the workmaterial along the interfaces tool–workpiece–chip is very much disturbed by a variation of the friction model. The new friction model, previously published and introduced in this model, has shown its higher efficiency to reach reasonable data about the material removal phenomena.