The effects of electrode wear on nugget development during resistance spot welding are major concerns in auto-body assembly and manufacturing. By considering detailed electrode-sheet interactions using advanced finite element modeling procedure, this paper presents a framework for detecting the electrode wear conditions and associated nugget development characteristics. Two important in-process parameters are studied in detail. They are the electrode movement and the dynamic resistance. It is found that the second-order derivative of the electrode movement and the first-order derivative of the dynamic resistance can be correlated in a fundamental form to identify the detailed nugget development process under various electrode wear conditions.
Characterization of Nugget Development under Electrode Wear Conditions in Resistance Spot Welding
Sae Technical Papers
International Body Engineering Conference & Exposition ; 1998
1998-09-29
Conference paper
English
Welding , Drag , Simulation and modeling , Assembling , Wear
Characterization of nugget development under electrode wear conditions in resistance spot welding
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