In this study, single discharge thermo-electrical model of workpiece
material removal in electrical discharge machining (EDM) was developed.
Developed model includes generation of energy in liquid media, variation
of plasma channel radius and transfer of heat from the channel by the
electrical discharge. Effect of generated energy in plasma channel on
workpiece removal was theoretically investigated by using different
experimental parameters used in literature. The developed model finds
the temperature distribution in the workpiece material using finite
element solver ANSYS Workbench (v.11) software. It’s assumed that the
workpiece material reaches the melting point of workpiece material was
removed from the surface. Electrical discharge process was simulated by
using transient thermal analysis. The developed model has also been
validated by comparing the theoretically obtained material removal
values with the experimental ones.