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TECHNICAL PAPERS: Heat Transfer in Manufacturing Processes

Modeling Dynamic Electrical Resistance During Resistance Spot Welding

[+] Author and Article Information
S. C. Wang, P. S. Wei

Department of Mechanical and Electro-Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan Republic of China

J. Heat Transfer 123(3), 576-585 (Nov 28, 2000) (10 pages) doi:10.1115/1.1370502 History: Received May 10, 2000; Revised November 28, 2000
Copyright © 2001 by ASME
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References

Figures

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Sketch for resistance spot welding and coordinate system
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Comparisons of dimensionless nugget thickness versus time in welding AISI 1008 steel between one and three-dimensional predictions from Gould 25, Wei et al. 6 and this work, and measurement from Gould 25
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A comparison of dimensionless dynamic resistance versus time between the measurement from Savage et al. 7 and prediction from this work in welding not cleaned steels with welding current of 8700 amps
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Unsteady variations of dimensionless dynamic resistance, bulk resistance, and contact resistances at the faying surface and electrode-workpiece interface
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Unsteady variations of dimensionless dynamic resistance, bulk resistance, and contact resistances at the faying surface and electrode-workpiece interface, σss(20°C).
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Unsteady variations of dimensionless dynamic resistance, bulk resistance, and contact resistances at the faying surface and electrode-workpiece interface for vanished film resistance
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Dimensionless dynamic resistance curve for different values of dimensionless constriction resistance parameter
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Unsteady variations of dimensionless dynamic resistance, bulk resistance, and contact resistances at the faying surface and electrode-workpiece interface by decreasing magnetic Prandtl number from Prm=3×104 (see Fig. 4) to 104
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Dimensionless dynamic resistance curve for different numbers of contact spots at the faying surface
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Dimensionless dynamic resistance curve for different values of dimensionless parameter governing welding current

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