Journal of Welding and Joining

: Journal of KWJS. 2009;27(2):32-37. Published online May 18, 2009.; A Study on Two-Dimensional Forming of Ship Hull Plate by Geometrical Approach; Woo-Jae Seong, Junsu Ahn, Hyun-Uk Kim, Suck-Joo Na

Abstract: In shipyard, plate forming is widely used to form the ship hull plate in various shapes. Line heating ethod by using a flame torch is one of the major shipbuilding processes carried out by skilled workers. ince the forming characteristics depend upon their experiences in manual forming, there are much ariations between products and difficulties in communication between engineers and workers. Hence, it eeds to develop an automatic forming system which can not only reduce the working time and rework osts but also improve the working environment and hull forming productivity. One of the final goals of late forming automation is to form a target shape from the initial plate automatically. For automated plate orming, it is required to determine where and how to heat on the plate. To realize this procedure, the nverse problem should be first solved and the effect of curvature shape formed at the heating path should e investigated. In this study, the inverse problem was solved by geometrical approach using the elationship between bending angle and radius of curvature of the curved shape. In addition, experiments of wo-dimensional plate forming were performed with the distance-based method considering the curved ending with curvature. The result of the formed shape agreed considerably well with the target shape.

Keywords :Ship hull plate;Plate forming;Line heating;Automation;Inverse problem