Simulation of Welding Deformations of Ship Structures

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Welding deformations of real structures are complicated and the accurate prediction of welding deformations has been a difficult problem. The equivalent load method is presented in this paper. The method uses the FE method combining the inherent strain theory and the experimental results for accurate and efficient analysis. A simplified elastic plastic analysis model, bar-spring model is used. It is showed that the highest temperature and the degree of restraint change the distributions of the inherent strains in the welded region. Applying the equivalent loads induced by the inherent strain on the structure, the final deformations are calculated by FE analysis. The results in this paper have been supported by the results of C.H.LEE and the experimental data.

Info:

Periodical:

Key Engineering Materials (Volumes 324-325)

Edited by:

M.H. Aliabadi, Qingfen Li, Li Li and F.-G. Buchholz

Pages:

651-654

DOI:

10.4028/www.scientific.net/KEM.324-325.651

Citation:

H. Li and H. L. Ren, "Simulation of Welding Deformations of Ship Structures", Key Engineering Materials, Vols. 324-325, pp. 651-654, 2006

Online since:

November 2006

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Price:

$35.00

[1] Y. Ueda, H et. Al J. Soc. of Naval Architects of Japan. Vol. 171: 395-404(in Japanese) (1992).

[2] Seung II Seo, Chang Doo Jang: Journal of Ship Production , Vol. 15, No. 2, May 1999, pp.73-81.

[3] D. Radaj: Heat Effects of Welding(Springer-Verlag Berlin Heidelberg 1992).

[4] C.H. Lee: Prediction of Welding Deformation of Ship Hull Panel Blocks using Equivalent Loading Method based on Inherent Strain [D]. Seoul National University(2002).

[4] 0. 0043 0. 0022 0. 0033 relative error 6. 98% 4. 55% 6. 06.

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