Abstract
Welding sequence has a significant effect on distortion pattern of large orthogonally stiffened panels normally used in ships and offshore structures. These deformations adversely affect the subsequent fitup and alignment of the adjacent panels. It may also result in loss of structural integrity. These panels primarily suffer from angular and buckling distortions. The extent of distortion depends on several parameters such as welding speed, plate thickness, welding current, voltage, restraints applied to the job while welding, thermal history as well as sequence of welding. Numerical modeling of welding and experimental validation of the FE model has been carried out for estimation of thermal history and resulting distortions. In the present work an FE model has been developed for studying the effect of welding sequence on the distortion pattern and its magnitude in fabrication of orthogonally stiffened plate panels.
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Dr. Pankaj Biswas was born in 1979. He is an Assistant Professor of IIT Guwahati, Dept. of Mechanical Eng. His current research interests include manufacturing and design: computational weld mechanics, ship production, line heating, and FE structural analysis.
Mr. D. Anil Kumar was born in 1983. He is a Research Scholar of IIT Guwahati, Dept. of Mechanical Eng. His current research interests include manufacturing: computational weld mechanics and FE thermo mechanical analysis.
Dr. Nisith Ranjan Mandal was born in 1954. He is a professor of IIT Kharagpur, Dept. of OE&NA. His current research interests include ship production, ship design, line heating, welding distortion of large stiffened structures and welding techniques.
Dr. M. M. Mahapatra was born in 1970. He is working as an assistant professor in the Mechanical and Industrial Engineering Department at Indian Institute of Technology, Roorkee. His current research interests include plate forming by line heating, welding deformation, welding residual stress analysis, and design of welded structures.
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Biswas, P., Kumar, D.A., Mandal, N.R. et al. A study on the effect of welding sequence in fabrication of large stiffened plate panels. J. Marine. Sci. Appl. 10, 429–436 (2011). https://doi.org/10.1007/s11804-011-1088-8
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DOI: https://doi.org/10.1007/s11804-011-1088-8