Dynamic Behaviour of β-Ti-15333 in Ultrasonically Assisted Turning: Experimental and Numerical Analysis

Abstract

The enhanced strength, fatigue life and corrosion resistance properties of Ti-alloys have attracted many industries for its utilization in various components exposed to extreme operating conditions. The machining of these alloys using conventional machining techniques is one of the main challenges in its wide application in many components and there is an obvious demand to analyse the materials response of these alloys in machining processes by developing simulation based models. The materials behaviour used in simulation of machining processes are usually determined by means of split-Hopkinson-pressure-bar (SHPB) setup. A 3D thermo-mechanically coupled finite-element (FE) model of SHPB is developed in the current work to analyse materials response of the β-Ti-15333 at selected temperature, strain rate and strain. The obtained materials response of the tested alloys is used in 3D thermo-mechanically coupled FE model of ultrasonically-assisted turning and conventional turning at various tested cutting conditions. The developed FE model was used for parametric analysis of β-Ti-15333 machining and the obtained FE results were in good agreement with experimental results.