J. Phys. IV France 120 (2004) 689-696
Experimental validation of an electro-thermo-metallurgical predictive model in resistance spot weldingG. Sibilia1, 2, P. Rogeon3, P. Paillard1, G. Saindrenan1, J. Soigneux2, P. Lemasson3 and D. Carron3
1 LGM, École Polytechnique de l'Université de Nantes, France
2 PSA Peugeot Citroën, Centre Technique de Vélizy, MXP/CEB/ASG, Villacoublay, France
3 LET2E, Université de Bretagne Sud, Lorient, France
In order to address spot welding numerical simulation of high strength steel, the validation of the model developed by the author in collaboration with PSA inc. using thermal kinetics measured within electrodes and sheets is described. The instrumentation techniques experimented here on either zinc coated or bare sheet assemblies aim at hindering interferences inevitably generated by the installation of intrusive sensors. Numerical and experimental results are compared for shape and size of welding spots, thermal kinetics and microstructures. All hypotheses and data sets considered to define interfacial conditions are then discussed.
© EDP Sciences 2004