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

考虑便于施工的船体槽缝部位研究

基本信息

批准号：
06555298
负责人：
FUNAKI Toshihiko
金额：
$ 4.03万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06555298/
关键词：
SLOT CONSTRUCTIONS SHIP HULL EASY CONSTRUCTION FEM-ANALYSIS A NEW DESIGN CONCEPT A NEW DESIGN OF MIDSHIP-SECTION FEM解折スロット部疲労強度座屈、最終強度 FEM 簡易解析法座屈・最終強度構造設計

项目摘要

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.

为了建造一艘完全采用自动焊接系统强化的高质量船舶，必须设计易于建造的船舶结构。我们关注插槽结构。其原因是其结构复杂，不能采用自动焊接系统建造。 20世纪60年代，大型船舶的槽缝结构出现了许多故障和断裂。船级社为防止槽结构中的失效和断裂进行了积极的研究并制定了施工指南。由于使用这些导轨，槽结构中的故障和断裂最近很少发生。但这些指南是基于部分使用早期有限元的近似分析。因此，没有正确反映槽结构在载荷下响应的真实特性。在我们的研究中，我们使用最新的有限元法对各种槽结构，例如松散槽、带/不带彩板和腹板的普通槽进行参数分析。我们计算了槽结构构件的传递力、最大应力及其分布载荷和剪力作用下的位置以及通过跨强度计算计算出的应力集中与名义应力的比值。我们制作槽结构的设计图表。我们使用这些图表绘制了 60 艘油轮的船中剖面。将新设计的船舶与使用现有指南的普通设计的船舶进行比较，我们发现有许多地方可以建造易于建造的槽，例如没有彩钢板和/或腹板加强筋的槽结构。