Thermal Deformation of Curved Plates by Line Heating

J. Ocean Eng. Technol. 2005;19(1):33-38.

LEE JOO-SUNG;LIM DONG-YONG;

School of Marine Engineering, University of Ulsan;School of Marine Engineering, University of Ulsan;

선상가열법에 의한 곡판의 열변형

이주성;임동용;

울산대학교 조선해양공학부;울산대학교 조선해양공학부;

Keywords: Curvature, Curved Plate, Flat Plate, Heating Line, Plate Forming, Thermo Elastic-Plastic Analysis

핵심용어: 곡률, 곡판, 평판, 가열선, 곡가공, 열탄소성 해석

Abstract

It has been well documented that plate forming is one of the most important processes in shipbuilding. In the most shipyards, the line heating method is primarily used for plate forming. Since the heating process is carried out for the curved plate and not for the flat plate, a curvature effect on the final deformation must be considered in deriving the simplified prediction models for deformation. This paper investigates the effect of curvature along the heating line on the deformation of the plate. First of all, results of numerical analysis are compared with these of a line-heating test, to justify the elasto-plastic analysis procedure for the present study, which shows good agreement. Then, the present numerical procedure is applied to flat and curved plate models, to investigate the curvature effect on the heat transfer characteristics and deformation by line heating.