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TECHNICAL PAPERS

Numerical Simulation of Residual Stresses in a Spot Welded Joint

[+] Author and Article Information
Xin Long, Sanjeev K. Khanna

Department of Mechanical and Aerospace Engineering, University of Missouri-Columbia, Columbia, MO 65211

J. Eng. Mater. Technol 125(2), 222-226 (Apr 04, 2003) (5 pages) doi:10.1115/1.1543968 History: Received December 07, 2001; Revised June 20, 2002; Online April 04, 2003
Copyright © 2003 by ASME
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References

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Khanna,  S. K., He,  Canlong, and Agrawal,  H. N., 2001, “Residual Stress Measurement in Spot Welds And The Effect of Fatigue Loading on Redistribution of Stresses Using High Sensitivity Moiré Interferometry,” ASME J. Eng. Mater. Technol., 123(1), pp. 132–138.
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Feng, Z., Babu, S. S., Santella, M. L., Riemer, B. W., and Gould, J. E., 1998, “An Incrementally Coupled Electrical-Thermal-Mechanical Model For Resistance Spot Welding,” 5th International Conference on Trends in Welding Research, Pine, Mountain, GA, pp. 1–5.
Gupta,  O. P., and De,  Amitava, 1998, “An Improved Numerical Modeling For Resistance Spot Welding Process and Its Experimental Verification,” ASME J. Manuf. Sci. Eng., 120(2), pp. 246–251.
Xu,  L., and Khan,  J. A., 1999, “Nugget Growth Model For Aluminum Alloys During Resistance Spot Welding,” Weld. J. (Miami), 78(11), pp. s367–s372.
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Figures

Grahic Jump Location
(a) Axisymetric mode of spot welding setup (b) Finite element model for spot welding
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The simulated spot nugget shape
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Cross sectional view of the actual spot-weld, the nugget shape is shown by the white boundary
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The Principal stress (σ1) distribution during spot welding at (a) end of the welding cycle, and (b) end of the holding cycle
Grahic Jump Location
Principal residual stress distribution in the spot weld: (a) principal residual stress σ1; and (b) principal residual stress σ2
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Principal residual stresses distribution at the half thickness of the spot joint
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Residual stresses in spot weld determined by high sensitivity moiré interferometry 7

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