Authors: Biswas, Pankaj; Mandal, N.R.

Source: Journal of Ship Production, Volume 24, Number 1, February 2008 , pp. 50-56(7)

Publisher: Society of Naval Architects and Marine Engineers (SNAME)

Abstract:

Fusion welding leads to heat-induced distortion. These deformations may adversely affect the structural integrity and subsequent alignment of the adjacent panels. The extent of distortion depends on several parameters such as welding speed, plate thickness, welding current, voltage, restraints applied to the job while welding, as well as sequence of welding. Welding being a transient phenomenon, finite element analysis of large stiffened panels is virtually not possible. In the present work, an analysis methodology based on the quasi-stationary nature of welding and the resulting symmetric behavior of the stiffened panels has been developed for studying the distortion pattern of orthogonally stiffened large plate panels. The effect of filler metal deposition has been taken into account by implementing element birth and death technique. The numerical model yielded results comparing well with the experimental results.

Keywords: FABRICATION; QUALITY ASSURANCE; SHIPBUILDING; STRESS ANALYSIS; THERMAL STRESSES; WELDING

Document Type: Research article

Publication date: 2008-02-01

More about this publication?

• The Journal of Ship Production publishes original and timely technical papers addressing problems of shipyard techniques and production of merchant and naval ships appear in this quarterly publication. Since its inception, the Journal has been a forum for peer-reviewed, professionally edited papers from academic and industry sources. As such, it has influenced the worldwide development of ship production engineering as a fully qualified professional discipline. Each issue contains a well-rounded selection of technical papers relevant to ship professionals, including written discussions and author's closures.
  
  From Volume 26 onwards this journal is published as Journal of Ship Production and Design
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