PROBLEM TO BE SOLVED: To provide a technique for automatically specifying a closed section on a cross section of a ship, in a step for designing the ship.SOLUTION: A ship design support program extracts closed section candidates by tracing points and sides forming an independence graph on a cross section of the ship, in a bi-direction, and determines areas of the respective closed section candidates, by a cross section 0-th moment. In consideration of directions tracing the sides, an area of outside (rear side) of each closed section candidate, is determined, therefore the acquired area becomes a negative value. By deleting the closed section candidates whose cross section 0-th moment becomes a negative value, correct closed section candidates can be extracted. By deleting the closed section candidate whose area becomes equal to or less than 0, the closed section can be specified.
【課題】船舶を設計する過程において、船舶の断面における閉区画を自動的に特定することができる技術を提供する。【解決手段】船舶設計支援プログラムは、船舶の断面上における独立グラフを構成する点と辺を双方向に辿ることにより閉区画候補を抽出し、各閉区画候補の面積を、断面0次モーメントによって求める。辺を辿る方向を考慮すると、その外側(裏側)の面積を求めることになり、したがって得られる面積は負値となる。このように断面0次モーメントが負値となる閉区画候補を削除することにより、正しい閉区画候補を取り出すことができる。面積が0以下となる閉区画候補を削除することにより、閉区画を特定する。【選択図】図3
SHIP DESIGN SUPPORT PROGRAM
船舶設計支援プログラム
2015-12-21
Patent
Electronic Resource
Japanese
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
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