Modelling of vibration assisted machining f.c.c single crystal
conference contributionposted on 11.09.2015, 08:44 authored by S. Abolfazl Zahedi, Anish RoyAnish Roy, Vadim SilberschmidtVadim Silberschmidt
In this paper, a developed three-dimensional model combining finite-element and smoothed-particle hydrodynamics approaches is presented. It incorporates a crystal-plasticity theory for vibration-assisted machining into ABAQUS/Explicit software by using a user-defined subroutine VUMAT. The paper presents quantitative comparison of cutting-force variation for VAM and conventional machining with identical cutting parameters for anisotropic workpieces. The obtained simulation results demonstrated that the (101) crystal orientation with a cutting direction at 30° had the highest reduction in a cutting force for three levels of vibration amplitude (10, 20 and 30 μm) and three levels of frequency (15, 20 and 25 kHz).
This paper was sponsored by the EPSRC UK (grant EP/K028316/1).
- Mechanical, Electrical and Manufacturing Engineering