This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Thermomechanical analysis of electrode wear mechanisms: A finite element study
Published June 03, 1996 by ISATA - Dusseldorf Trade Fair in United Kingdom
Event: ISATA 1996
Resistance spot welding has been the principal joining method in autobody fabrication and assembly. Electrode wear has been a major concern in resistance spot welding of galvanized steel. In this paper, advanced finite element techniques were used to simulate the thermomechanical interactions between the electrode and the workpiece during welding. First, the electric-thermal process associated with nugget formation was studied. The temperature history generated was then used to simulate the thermal-mechanical conditions during nugget formation and growth. And finally, analyses of electrode face extrusion mechanisms as well as electrode pitting effects were carried out to gain insight on the electrode wear mechanisms.