海洋巡防艦艇於波浪運動下結構反應分析之研究

• Main Authors: CHEN CHUN NAN, 陳俊男
• Other Authors: 周錫明
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/81121742260855937080

碩士 === 國防大學中正理工學院 === 造船工程研究所 === 95 === The performance of patrol boats is a matter of the effectiveness of the maritime law enforcement. Therefore, a precise analysis of hull structure under severe sea conditions is important. It can decrease scantling, reduce the weight, and lower down the construction cost through the precise stress analysis on ship hull. This thesis investigated the stress distribution on a patrol boat of Coastal Patrol Directorate General under the impacts of ocean waves. First of all, the panel method based on the three dimensional Green’s function is used to analyze the response amplitude operators of ship motion and load in waves through the software HSC-3D. Together with the Pierson-Moskowiz wave spectrum and scatter diagram, the long-term extreme value can be attained in a period of twenty years and a design wave was selected to meet the maximum vertical bending moment condition amidships. Finally, the stress analysis has been made for the patrol boat by using the finite element method under the design wave condition. To develop a high performance boat is the target of what the ship owners and designers pursue. Unlike other structure, however, ship structures and the dynamic loading are much more complex and serious respectively. Thus, evaluation of the ship performance and structure safety in waves is an important but difficult task. The results of this study may be used for further application and development, especially in the structure design and build of patrol boats.