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TECHNICAL PAPERS

A Simple Estimating Method for Reduction of Welding Residual Stresses in Thick Welded Joint From Stress-Relief Annealing—Part IV: Applicability of the Simple Estimating Method for Stress-Relief Annealing of Thick Welded Joint

[+] Author and Article Information
Keiji Nakacho

Joining and Welding Research Institute, Osaka University, Ibaraki, Osaka 567-0047, Japane-mail: nakacho@jwri.osaka-u.ac.jp

J. Pressure Vessel Technol 124(2), 207-214 (May 01, 2002) (8 pages) doi:10.1115/1.1398285 History: Received September 17, 1999; Revised June 13, 2001; Online May 01, 2002
Copyright © 2002 by ASME
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References

Ueda,  Y., and Fukuda,  K., 1975, “Application of Finite Element Method for Analysis on Process of Stress Relief Annealing” (in Japanese), J. JWS, The Japan Welding Society, 44, No. 11, pp. 902–908.
Ueda,  Y., and Fukuda,  K., 1975, “Analysis of Welding Stress Relieving by Annealing Based on Finite Element Method,” Trans. JWRI, Welding Research Institute of Osaka University, Japan, 4, No. 1, pp. 39–45.
Ueda,  Y., and Fukuda,  K., 1977, “Application of Finite Element Method for Analysis on Process of Stress Relief Annealing,” Trans. JWS, The Japan Welding Society, 8, No. 1, pp. 19–25.
Ueda,  Y., Takahashi,  E., Fukuda,  K., Sakamoto,  K., and Nakacho,  K., 1976, “Multipass Welding Stresses in Very Thick Plates and Their Reduction from Stress Relief Annealing,” Trans. JWRI, Welding Research Institute of Osaka University, Japan, 5, No. 2, pp. 179–189.
Ueda, Y., Fukuda, K., Nakacho, K. Takahashi, E., and Sakamoto, K., 1976, “Transient and Residual Stresses from Multipass Weld in Very Thick Plates and Their Reduction from Stress Relief Annealing,” Proc. Third International Conference on Pressure Vessel Technology, ASME, Part II, pp. 925–933.
Ueda, Y., Fukuda, K., and Nakacho, K., 1977, “Basic Procedures in Analysis and Measurement of Welding Residual Stresses by the Finite Element Method,” Proc. International Conference on Residual Stresses in Welded Construction and Their Effects, TWI, pp. 27–37.
Ueda,  Y., Takahashi,  E., Fukuda,  K., Sakamoto,  K., and Nakacho,  K., 1978, “Mechanical Behavior of Multipass Welded Joint during Stress Relief Annealing” (in Japanese), J. JWS, The Japan Welding Society, 47, No. 8, pp. 500–506.
Nakacho,  K., and Ueda,  Y., 1996, “A Simple Estimating Method for Reduction of Welding Residual Stresses in Thick Welded Joint From Stress-Relief Annealing—Part I: Development of the Analytical Method for Relaxation Tests and Its Applicability,” ASME J. Pressure Vessel Technol., 118, pp. 343–350.
Nakacho,  K., and Ueda,  Y., 1999, “A Simple Estimating Method for Reduction of Welding Residual Stresses in Thick Welded Joint From Stress-Relief Annealing—Part II: The Characteristics of Reduction of Welding Residual Stresses in Very Thick Joints During SR Treatment,” ASME J. Pressure Vessel Technol., 121, pp. 11–16.
Nakacho,  K., 2001, “A Simple Estimating Method for Reduction of Welding Residual Stresses in Thick Welded Joint From Stress-Relief Annealing—Part III: Development of Estimating Equations for Multiaxial Stress State in Thick Welded Joint,” ASME J. Pressure Vessel Technol., 124, pp. 14–21.

Figures

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Specimen of thick welded joint for analysis
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Restraint conditions of specimen—(a) restraint condition A, and (b) restraint condition B
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Longitudinal and transverse stresses in thick welded joint after welding and during SR (in the case of restraint condition A)—(a) at the middle cross section (Y=0), and (b) on the top surface (Z=100 mm)
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Longitudinal and transverse stresses in thick welded joint after welding and during SR (in the case of restraint condition B)—(a) at the middle crosssection (Y=0), and (b) on the top surface (Z=100 mm)
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Flow chart of calculation by simple estimating method
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Estimated results of change of welding residual stress during SR (in the case of restraint condition A)—(a) change of the largest welding residual stress σx, and (b) change of the welding residual stress σx at toe of weld
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Estimated results of change of welding residual stress during SR (in the case of restraint condition B)—(a) change of the largest welding residual stress σx, and (b) change of the welding residual stress σx at toe of weld

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