Construction of NURBS Model for Preliminary High-Speed Monohull Design Based on Parametric Approach

J. Ocean Eng. Technol. 2006;20(3):82-87.

Nam Jong-Ho;

Division of Ocean Systems Engineering, Korea Maritime University;

파라메트릭 기법을 고속 단동선의 NURBS 모델링

남종호;

한국해양대학교 해양시스템공학부;

Keywords: Parametric approach, NURBS Surface representation NURBS, High-speed monohull

핵심용어: 파라메트릭 기법, 곡면 표현법, 고속 단동선

Abstract

An approach to model a high-speed monohull vessel is introduced. The high-speed monohull form belonging to the category of multihull is drawing new attention, due to the rapidly growing trend of fast passenger ships and military purpose. Multihull forms are much thinner in their overall shape, compared to those of the conventional commercial vessels. Moreover, the parent hull forms are not readily obtainable when a new design is intended, which makes it hard to perform various technical calculations in terms of hull optimization, hydrodynamic computation, structural design, and so forth. In this paper, a parametric technique is used to design a high-speed hull form. To model a hull form, NURBS (Non Uniform Rational B-Spline) representation is used. The goal of research is to provide a fast and convenient tool to design an initial hull form with fewer parameters available in the early design stage. The technique employed in this paper will be applied to the design of multihull forms, such as catamaran, trimaran, and semi-swath.