A Study on the Effect of Welding Sequence in Fabrication of Large Stiffened Plate Panels

Pankaj Biswas; D.Anil Kumar; N.R.Mandal; M.M.Mahapatra

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A Study on the Effect of Welding Sequence in Fabrication of Large Stiffened Plate Panels

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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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《船舶与海洋工程学报（英文版）》 |2011年第4期|429-436|共8页
作者
Pankaj Biswas; D.Anil Kumar; N.R.Mandal; M.M.Mahapatra;
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Department of Mechanical Engineering, HT, Guwahati.India;

Department of Mechanical Engineering, HT, Guwahati.India;

Department of Ocean Engineering & Naval Architecture, HT, Kharagpur, India;

Department of Mechanical Engineering, IIT, Roorkee, lndia;

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A Study on the Effect of Welding Sequence in Fabrication of Large Stiffened Plate Panels

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