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.


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    Title :

    Characterization of Nugget Development under Electrode Wear Conditions in Resistance Spot Welding


    Additional title:

    Sae Technical Papers


    Contributors:
    Lu, F. (author) / Dong, P. (author)

    Conference:

    International Body Engineering Conference & Exposition ; 1998



    Publication date :

    1998-09-29




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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