한국해양대학교

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An approach of hull form variation based on arbitrary curve-on-surface constraint

Title
An approach of hull form variation based on arbitrary curve-on-surface constraint
Alternative Title
임의 방향의 곡면위곡선 제한조건을 반영한 선체 형상 변환 방법
Author(s)
Luong Quang Phap
Issued Date
2021
Publisher
Graduate School of Korea Maritime & Ocean University
URI
http://repository.kmou.ac.kr/handle/2014.oak/12752
http://kmou.dcollection.net/common/orgView/200000506408
Abstract
Because of the direct relation to every design phase of a ship, ship hull form is frequently designed by varying a well-made parent ship to avoid new design risks. In hull form variation, geometric satisfactory and good performance preservation of the parent ship are considered as the competing requirements. In order to perform the variation effectively, an appropriate compromise between these requirements should be accomplished. Instead of altering hull form parameters, we propose a flexible and intuitive approach to interactively vary hull surface with an arbitrary curve constraint and focus on preserving good properties of the original hull surface. The advantages of superposition of curve and surface is utilized to modify the hull shape. An intermediate surface, which satisfies an intermediate curve constraint and has a smooth shape, is conducted and superimposed on to the top of the original surface to yield the desired surface. A shape control mechanism using shape function simplifies control the surface modification with a curve constraint in a linear fashion way. The developed method is applied to modify a characteristic curve and a section line lying on the stern part of a container hull form. The changes of geometric shape and hydrodynamic performance due to the curve-constraint variation are assessed to demonstrate the practicality and efficiency of the proposed method.
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조선해양시스템공학과 > Thesis
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