Study on Welding Deformations of Shipboard of Container Vessel

Abstract:

Residual plastic strains of the shipboard are the product of nonlinear behaviors during welding. Deformations of a welded shipboard injure the beauty of appearance of the ship, cause errors during the assembly of the shipboard and reduce the strength of the ship. Residual welding deformations of shipboard of a container vessel are studied in this paper. Nonlinear three dimensional transient temperature fields are analyzed by FEM first. The heat source is modeled as a moving heat flux following a Gaussian distribution. Then, applying the equivalent loads induced by the inherent strain on the shipboard, the final in-plane shrinkage and out-of-plane deformations are calculated. Being compared with the experimental results of deformations, the simulated results show mostly conformity.

• Periodical: Key Engineering Materials (Volumes 488-489)
• Pages: 218-221
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.488-489.218
• Online since: September 2011
• Authors: Hong Li, Da Lu Qiu, Guang Lei Li, Hui Long Ren
• Keywords: Container Vessel, Equivalent Load, Gaussian Heat Source, Inherent Strain, Residual Deformation

References

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

[2] Chang Doo Jang, Seung II Seo and Dae Eun Ko. A Study on Prediction of Deformations of Plates Due to Line Heating Using a Simplified Thermal Elasto-Plastic Analysis. Journal of Ship Production. 1997, 13(1): 22-27.

DOI: 10.5957/jsp.1997.13.1.22

[3] Hong Li, Huilong Ren. Prediction of Welding Distortions of Stainless Steel Ship. Key Engineering Materials, Vols. 348-349 (2007): 373-376.

DOI: 10.4028/www.scientific.net/kem.348-349.373

[4] LI Hong, REN Huilong. Simulation of Welding Deformations of Ship Sections. Ship Engineering. Vol. 28 No. 5 2006: 19-22 (in Chinese).