Research On The Scheme Design System Of Fiberglass Hull

The world’s yacht market moved quickly to the Asia-Pacific region.It took rare opportunities of development for Shangdong province.In order to speed up development of ship,improve the capability of boats producting,advance the buliding of Jiaodong peninsula Economic Zone, the important measure has been proposed by Shandong that all small ship is constructed by fiberglass.This is an important part of the establishment of offshore Shandong.But the current construction of ship which is mainly based on manual and design experience can not meet the needs of rapid development of this industry. Therefore,this paper applied the artificial intelligence technology and the parametric3D modeling technology to the design of fiberglass hull.It researched on the rapidly design technology of ship which is based on the parent ship and user requirement, developed rapidly design system of fiberglass ship and provided technical and software support for the rapid development of the fiberglass boat industry.This paper firstly introduce the lines design method applying case based reasoning. Collecting old-fashioned hull form,past design experiences and design data to bulid hull lines base,knowledge base and database. The method applying case based reasioning is taken to obtain parent ship when new ship is designed. Next based on parent ship to achieve prototype ship transformation according to the design requirement. Finally the new ship lines is fared and modified, then its offset points are picked up. This process is more rapid and accurate.Then, parametric3D modeling technology is applied to strctural design of glass reinforced plastic hull. Hull structrue is divided in according to the preceding information of data point and design requirements. The next step is to find parameters for parameterizing and constraints relationship of all structrues. Finally the3D hull strctrue will be bulit in UG, and providing a guarantee for follow-up estimating the weight of the hull.Design evaluation is an important link for the design of fiberglass hull. So the paper according to the data point and3D hull strcture to calculate the boats statics, analyse the resistance quality, estimate the weight and gravity centre of the hull. The system will judge whether the design requirements are being met based on the results. When they are not met, the parameters of hull will be altered until they are.At last chapter, the functional design and the architectural design of system were carried out. The actual system was developed. The system based on secondary development of UG and used UG/Open as tool to develop in Visual C++6.0 environment.The practice in Weihai Zhongfu Xigang Ship Co.,Ltd has approved the research achievement of this paper and the effectiveness of the system.