Sensitivity analysis of the input parameters of a physical based ductile failure model of Ti-6Al-4V for the prediction of surface integrity

摘要: Abstract In machining of Ti-6Al-4V, it is commonly reported the appearance segmented chip produced by adiabatic shearing (at high cutting speeds) and lack ductility low speeds). Moreover, a manufacturing process that based on applying external energy to workpiece produce separation material layer. Thus, analyze physics involved in new surface generation segmentation process, necessary apply ductile failure models. However, characterization fracture models conditions (temperature, strain rate, stress triaxiality, Lode angle etc.) an arduous task. Therefore, define model applicable almost inevitable inverse simulations strategies obtain reliable results not tested conditions. Nevertheless, there few information about influence input parameters fundamental outputs even less integrity aspects. The aim this research was conduct sensitivity analysis physical only variables (forces, temperatures morphology) but also (surface drag). To end, subroutine developed for implemented Finite Element Method (FEM) software AdvantEdge. Subsequently, using statistical Design Experiments (DOE) technique analyzed.