Abstract
In the past, National Maritime Research Institute developed the system for curved shell plate forming which is usually regarded as a special skilled work in a shipyard. The system mainly improves sheet metal forming work efficiently in shipyards, and also for improving an accuracy of a curved shell plate developing in a design stage. However, this system still has room for an improvement in regards to surface representation of ship plates. In this paper, an iterative geometric approximation method, which iteratively repositions B-spline control points on the basis of geometrical rules, is introduced to fit points data of ship plate for the purpose of improving accuracy of the system. Finally, this paper provides results of surface approximation of ship plate and its demonstration of the plate forming in a shipyard using our new system.
