A RESEARCH ON THE SROT PARTS OF THE SHIP-HULL UNDER CONSIDERING EASY CONSTRUCTION

点击翻译按钮获取中文摘要

In order to build a high quality ship in fully strengthend by automatically welding system, it is nessesally to design ship constructions which are easily constructed. We pay attension to the slot constructions. It is caused from the complex constructions not to built them by automatically welding systems. In the 1960s, there were many failures and fractures in the slot constructions of large ships. Enthusiastic researches are carried and the construction guides are decided for preventing failures and fractures in the slot constructions by the classification socities. As the results of using these guides, the failures and fractures in the slot constructions are very few recently. But these guides are based on the approximated analysis by partially using incipient FEM.Therefore, the real characters for responces of the slot constructions underloads are not corectly reflected.In our research, we make parametric analysis for various slot constructions, for example loose slot, ordinaly slot with/without the color plate and the webstiffner, using the newest FEM.We calculate the transmited forces to the members of slot construction, the maximum stress and its location and the stress concentration ratio to the nominal stress calculated by the trans-strength calculation under the disributed load and the shearing force. We make the designing charts for the slot constructions. And we draw the midship section for 60 Tanker using these charts. Comparing the new desgned ship and the ordinaly designed ship using nawdays guide, We find that there are many places whereeasily constructed slot, for example the slot construction without tne color plate and/or web-stiffner, can be built.