Three approaches for modeling residual stresses induced by orthogonal cutting of AISI316L

Different to model the orthogonal cutting process methods can be found in the literature. Each approach has its advantages that make it more appropriate for modeling particular cutting cases than others. In this work, three finite element models of the orthogonal cutting process are developed: (i) Lagrangian (LAG), (ii) Arbitrairy Lagrangian and Eulerian (ALE) and (iii) hybrid model. The purpose of this paper is to improve these models in order to predict machining induced Residual Stresses (RS). A critical assessment of the applicability of each method is presented and their efficiency in the prediction of RS profiles is discussed. The absence of the damage criterion and consequently the absence of suppressing mesh elements makes the ALE model more reliable than the LAG one when predicting the RS curves. However, even though the hybrid model presents similar performances in the numerical prediction, the RS profiles are closer to the experimental results, owing to the accuracy of its input data. (C) 2017 Elsevier Ltd. All rights reserved.