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TECHNICAL PAPERS

3-D Finite Element Modeling of the Welding Process Using Element Birth and Element Movement Techniques

[+] Author and Article Information
Ihab F. Z. Fanous, Maher Y. A. Younan

Mechanical Engineering Department, American University in Cairo, Cairo, Egypt

Abdalla S. Wifi

Mechanical Design and Production Department, Cairo University, Cairo, Egypt

J. Pressure Vessel Technol 125(2), 144-150 (May 05, 2003) (7 pages) doi:10.1115/1.1564070 History: Received April 26, 2002; Revised February 05, 2003; Online May 05, 2003
Copyright © 2003 by ASME
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References

Nguyen,  N. T., Ohta,  A., Matsuoka,  K., Suzuki,  N., and Maeda,  Y., 1999, “Analytical Solutions for Transient Temperature of Semi-Infinite Body Subjected to 3-D Moving Heat Sources,” Weld. J. (Miami), Aug., pp. 265–274.
Goldak, J., 1990, “Keynote Address: Modeling Thermal Stresses and Distortions in Welds,” Recent trends in welding science and technology, ASM International.
Ueda,  Y., and Yuan,  M. G., 1993, “Prediction of Residual Stresses in Butt Welded Plates Using Inherent Strains,” ASME J. Eng. Mater. Technol., 115, Oct., pp. 417–423; 116, July 1994, pp. 285.
Mochizuki,  H., and Hattori,  H., 1999, “Residual Stress Analysis by Simplified Inherent at Welded Pipe Junctures in a Pressure Vessel,” ASME J. Pressure Vessel Technol., 121, Nov., pp. 353–357.
Dong,  P., 2001, “Residual Stress Analyses Multi-Pass Birth Weld: 3-D Special Shell versus Axisymmetric Models,” ASME J. Pressure Vessel Technol., 123, May, pp. 207–213.
Hibbit,  Hugh D., and Marcal,  Pedro V., 1973, “A Numerical, Thermo-Mechanical Model for the Welding and Subsequent Loading of a Fabricated Structure,” Comput. Struct., 3, pp. 1145–1174.
Friedman,  E., 1975, “Thermomechanical Analysis of the Welding Process Using the Finite Element Method,” ASME J. Pressure Vessel Technol., 97, Aug., pp. 206–213.
Wilkening,  W. W., and Snow,  J. L., 1993, “Analysis of Welding-Induced Residual Stresses With The Adina System,” Comput. Struct., 47(4/5), pp. 767–786.
Fanous, I. F. Z., “3D Modeling of the Welding Process Using Finite Elements,” M.Sc. thesis, The American University in Cairo, February 2002.
Hibbitt, Karlsson, and Sorensen, “ABAQUS/Standard User’s Manual,” 6.2, 2001.
Brown,  S., and Song,  H., 1992, “Finite Element Simulation of Welding Large Structures,” ASME J. Eng. Ind., 114, Nov. , pp. 441–451.

Figures

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The moving heat source of Model 2
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General boundary conditions
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The diagram of the welding process of case 1
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General boundary conditions
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The moving heat source of Model 1
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Zones of heat load and heat loss
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(a) The effective area, and (b) thermal conductivity versus the gap clearance of the gap elements
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The steps of the element movement technique
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The moving heat source of Model 3
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Zones of heat load and heat loss
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Stress distribution along the midsection
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Temperature history at the top and bottom surfaces of Models 2 and 3
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Comparison between the element birth and element movement techniques for (a) σx (longitudinal stress) and (b) σy (transverse stress) history at the monitoring points, (c) σx and (d) σy distribution along the midsection, (e) σx and (f ) σy distribution along the welding line, and (g) and (h) along the fusion line

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