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http://dx.doi.org/10.5781/KWJS.2010.28.3.065

Numerical Analysis of Welding Residual Stresses for Ultra-thick Plate of EH40 TM and API 2W Gr.50 Steel Joined by Flux Core Arc Welding  

Hwang, Se-Yun (Dept. of Naval Architecture and Ocean Engineering, Graduate School, Inha University)
Lee, Jang-Hyun (Dept. of Naval Architecture and Ocean Engineering, Inha University)
Yang, Young-Sik (Dept. of Naval Architecture and Ocean Engineering, Graduate School, Inha University)
Lee, Sung-Je (Dept. of Naval Architecture and Ocean Engineering, Graduate School, Inha University)
Kim, Byung-Jong (Dept. of Naval Architecture and Ocean Engineering, Graduate School, Inha University)
Publication Information
Journal of Welding and Joining / v.28, no.3, 2010 , pp. 65-72 More about this Journal
Abstract
Some structural members of large-scale marine vessels such as large-scale offshore structures and very large container ships are assembled by very thick plates of which thickness exceeds 60mm. Also, high-tensile steels have been selected to meet the required structural strength and fatigue strength. Generally, multi-pass welding method such as FCA(Flux-Core Arc) welding has been used to join the thick plates. Considering the welding residual stresses, fatigue strength of the welded joints of thick plates should be assured since the residual stress influences the fatigue strength. This paper presents a numerical procedure to investigate the residual stress of structure joined by multi-pass FCA welding so that it can be incorporated into the fatigue strength assessment considering the effect of welding residual stress. The residual stress distribution is also measured by X-Ray diffraction method. The residual stress obtained by the computational model also has been compared with that of experiment. The results of FEA are in very good agreement with the experimental measurements.
Keywords
Multi-pass FCA welding; FEA; Welding residual stress; Flux core arc welding; X-Ray diffraction measurement; EH40 TM; API2W Gr.50;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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1 E. Armentani, R. Esposito, and R. Sepe: The effect of thermal properties and weld efficirncy on residual stresses in welding, Journal of Achievements in Materials and Manufacturing Engneering, 20-1 (2007), 319-322
2 R. R. Rykalin: Energy Source for Welding, Houdrement Lecture, International Institute of Welding, (1974), 1-23
3 S. Lamont: The Behaviour of Multi-storey Composite Steel Framed Structures in Response to Compartment Fires, Ph.D. Thesis, The University of Edinburgh, (2001)
4 K. S. Chun, H. C. Song, and S. W. Im: Measurement of Welding Residual Stresses by X-ray Diffraction Method, Proceedings of the Annual Autumn Meeting of SNAK, (2007), 208-213
5 G. B. Jang, H. K. Kim, and S. S Kang: The Effects of Root Opening on Mechanical Properties, Deformation and Residual Stress on Weldments, Welding Research Supplement, (2001)
6 I. S. Kim, I. K. Kim, C. J. Moon, Y. J. Jeong, and Y. H. An: A Study on Analysis of Heat Transfer and Residual Stress on the Weld Zone using FEM, Journal of the Korean Society of Machine Tool Engineers, 9-5 (2000), 96-104 (in Korean)   과학기술학회마을
7 S. M. Joo, B. H. Yoon, W. S. Chang, H. S. Bang, H. S. Bang, and C. S. Ro: Redistributions of welding residual stress for CTOD specimen by local compression, Journal of KWJS, 27-6 (2009) 31-35 (in Korean)   과학기술학회마을   DOI   ScienceOn
8 C. H. Lee, and J. H. Chang: Three-dimensional finite element simulation of residual stresses in circumferential welds of steel pipe including pipe diameter effects, Materials Science and Engineering, 487-1 (2008), 210-218   DOI   ScienceOn
9 J. H. Lee, S. Y. Hwang, and Y. S. Yang: Effect of Melting Pool on the Residual Stress of Welded Structures in Finite Element Analysis, Journal of Ship and Ocean Technology, 11-3 (2007), 14-23 (in Korean)
10 S. Y. Hwang, J. H. Lee, Y. S. Yang and, S.W. Im: Numerical Analysis and Experiments of Residual Stress in Tandem EGW for Very Thick Plate, Journal of KWJS Conference, 50 (2008), 11 (in Korean)
11 MSC.Marc Volume B : Element Library, MSC. Software Co., (2007)
12 MSC.Marc Volume A : Theory and User Information, MSC.Software Co., (2007)
13 S. W. Im, I. W. Chang, C. H. Cho, and K. K Park: Fatigue Behavior of Large Scale Tabular Joint for API 2W Gr.50 Steel, Journal of Korean Society of Ocean Engineers, (2005), 19-3 (in Korean)
14 J. Goldak, A. Chakravarti, and M. Bibby: A New Finite Element Model for Welding Heat Sources, Metallurgical Transactions, 15B (1983), 299-305   DOI
15 S. S. Lee, and B. Y. Ahn: Development of Residual Stress Measurement Techniques in Weldments, Proceedings of Korea Institute Structure Maintenance Insection, (1997), 43-48
16 S. W. Im, and I. W. Chang: Fatigue Performance of EH40-TM Steel Plate for Container Carrier, Proceedings of the Nineteenth 2009 International Offshore and Polar Engineering Conference, (2009)
17 S. W. Im, and J. S. Lee: Assessment of Fatigue Strength Characteristics of Tendon Porch in Offshore platforms for API 2W Gr.50 Steel, Journal of Korean Society of Ocean Engineers, 20-5 (2006) (in Korean)   과학기술학회마을
18 I. W. Han, Y. H. Park, G. B. An, and Y. H. An: Development Trends of Steel Plates for Ship Building and Off-shore Construction and It's Weldability, Journal of KWJS, 27-1(2009), 25-33 (in Korean)   과학기술학회마을   DOI
19 T. L. Teng, and P. H. Chang: Effect of Residual stresses on fatigue crack initiation life for butt-welded joints, Journal of Materials Processing Technology, 145 (2004), 325-335   DOI   ScienceOn
20 M. N. James, D. J. Hattingh, D. G. Mills, and P. J. Webster: Residual stress and strain in MIG butt welds in 5083-H321 aluminum: As-welded and fatigue cycled, Int J of Fatigue, 31-1 (2009), 28-40   DOI   ScienceOn