A Study on the Automatic Fairing and Modeling System of Hull From

J. Ocean Eng. Technol. 2000;14(2):121-127.

선형의 자동순정 및 모델링 시스템에 관한 연구

김동준

부경대학교 조선해양시스템공학과

Keywords: Surface fairing, Inverse fairing method, Surface quality analysis method, Object reflection line, Normal vector line, Constrained reflection line

핵심용어: 곡면순정, 역순정법, 곡면품질분석법, 목적반사선, 법선벡터곡선, 한정반사곡선

Abstract

In this paper a new technique of inverse fairing problem for ship hull is proposed. Recently Lu solved the inverse fairing problem for automobile's body that was made by one surface element. In this system however hull surface is constructed by Gregory's composite surface interpolation method. So reflection line at boundary position is used as a tool of solving inverse problem in surface fairing. But the results are not good. The new concepts of Normal vector line and Constrained reflection line are introduced as an alternative tool. Energy minimization method for Normal Vector Line curve net and the inverse method for Constrained Reflection Line by using optimization technique are examined And the final lines from this proposed surface fairing method shows good fairness.