Abstract
Residual stress is an important surface integrity descriptor that may have a marked effect on the functional performance of
machined alloy parts. This paper describes a finite element evaluation of the effect of different constitutive models on machining
induced residual stresses for Ti6Al4V titanium alloy. A two dimensional orthogonal turning process is modelled and the results
compared to experimental data. Residual stress is evaluated with respect to different elastic-viscoplastic constitutive models at
certain cutting speeds and feeds. The general-purpose finite element code MSC Marc@ was used with comparisons with
experimental data made relative to residual stress, cutting force and temperature. The magnitude and extent (depth) of the residual
stress field is evaluated with regards to the different material models and compared with experimental data.