مقاله جوشکاری به عنوان :FINITE ELEMENT MODELING OF RESISTANCE SPOT WELDINGPROCESSP. Chigurupati*, B.K Chun, A. Bandar, W.T WuScientific Forming Technologies Corporation2545 Farmers Drive, Suite 200, Columbus, OH 43235, USAچکیده: ABSTRACT: Weld quality in Resistance Spot Welding is directly influenced by competing process transients. Thesetransients are caused by electrical, thermal, mechanical and metallurgical interactions. Controlling the process variablessuch as current, clamping force and welding time requires good understanding of how these interactions evolve duringthe welding process. In order to better understand the process and to control the final product quality in an efficientmanner, a comprehensive process model that can account for these multi physics phenomena is required. This paperdescribes a general methodology that is used in the commercial Finite Element code, DEFORMTM to model theresistance spot welding process incorporating all the basic mechanics of deformation, thermal, electrical andmicrostructure models. Modeling process is illustrated using an example from the published literature. A detaileddiscussion of the process mechanics based on the observed transients during various stages of the spot welding processare presented. Model predictions on the thermal, mechanical and evolving microstructural phases during the weldingprocess are also discussed.
مقاله جوشکاری به عنوان :FINITE ELEMENT MODELING OF RESISTANCE SPOT WELDINGPROCESSP. Chigurupati*, B.K Chun, A. Bandar, W.T WuScientific Forming Technologies Corporation2545 Farmers Drive, Suite 200, Columbus, OH 43235, USAچکیده: ABSTRACT: Weld quality in Resistance Spot Welding is directly influenced by competing process transients. Thesetransients are caused by electrical, thermal, mechanical and metallurgical interactions. Controlling the process variablessuch as current, clamping force and welding time requires good understanding of how these interactions evolve duringthe welding process. In order to better understand the process and to control the final product quality in an efficientmanner, a comprehensive process model that can account for these multi physics phenomena is required. This paperdescribes a general methodology that is used in the commercial Finite Element code, DEFORMTM to model theresistance spot welding process incorporating all the basic mechanics of deformation, thermal, electrical andmicrostructure models. Modeling process is illustrated using an example from the published literature. A detaileddiscussion of the process mechanics based on the observed transients during various stages of the spot welding processare presented. Model predictions on the thermal, mechanical and evolving microstructural phases during the weldingprocess are also discussed.