Optimization of Engine Room Structure with Modules of Equipments

设备模块优化机舱结构

• 批准号: 08455472
• 负责人: NOBUKAWA Hisashi
• 金额: $ 4.93万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08455472/
• 关键词: Engine Room Structure; Modules of Equipments; Vibration; Finite Element Method; Eigen Frequency; Eigen Mode; 小型船; 居住区構造

New type of engine room for 499 ton type ship has been researched here. In order to install several large modules of equipment in engine room, a large open hatch is necessary on upper deck. The cabin of this new type of ship has been separated cabin from ship, because we need open space over the engine room when several large equipments, such as engine, are installed into engine room. However, it is required to check the stiffness of ship, especially engine room, since there is a large hole on upper deck. Hence, in this research work, we make numerical investigation for structure behavior with respected to vibration. Two kinds of engine rooms are designed here, one has second deck and the other dose not. The conclusion is listed below.Enginer room with second deckNumerical investigation has been done with the number of pillar changed as 0,4,6,8,9. The best number of pillars is from 6 to 9 in order to avoid resonance with engine.Engine room without second deckNumerical investigation has been done with the number of pillar ichanged as 0,4,6,7. The best number of pillars is 7 in order to avoid resonance with engine. It is also cleared that other pillars is better to be attached on side shell for having more stiffened structure.

本文对499吨级船舶新型机舱进行了研究。为了在机舱内安装几个大型设备模块，需要在上甲板上设置一个大开口。这种新型船舶的机舱与船舶分离，是因为在机舱内安装发动机等大型设备时，需要机舱上方有空地。但是，由于上甲板有一个大洞，需要检查船舶的刚度，特别是机舱。因此，在本研究工作中，我们对结构的振动行为进行了数值研究。在此设计了两种机舱，一种有二层甲板，另一种没有二层甲板。本文的主要结论如下：1.机舱室加第二层甲板对立柱数目分别为0，4，6，8，9的情况进行了数值模拟。为了避免与发动机发生共振，最佳立柱数为6 ~ 9根。为了避免与发动机产生共振，最佳支柱数量为7。同时也明确了其它支柱最好附加在侧壳上，以增加结构的刚度。

项目成果

信川 寿: "Optimization of Engine Room Structure under Static and Dynamic Constrains Using Genetic Algorithms" 日本造船学会論文集. 183(印刷中). (1998)

Hisashi Nobukawa：“使用遗传算法优化静态和动态约束下的机舱结构”日本造船学会论文集 183（出版中）。

信川 寿: "Optimization of Engine Room Structure under Static and Dynamic Constraints Using Genetic Algorithms" 日本造船学会論文集. 183(印刷中). (1998)

Hisashi Nobukawa：“利用遗传算法优化静态和动态约束下的机舱结构”，日本造船学会汇刊 183（出版中）。

Mitsuru Kitamura: "A Study on A Posterior Error Estimation of Finite Element Analysis for Eigen value Problem of Frame Structures" J.Soc.Naval Architects Japan. Vol.181. 341-346 (1997)

Mitsuru Kitamura：“框架结构特征值问题的有限元分析后验误差估计的研究”J.Soc.Naval Architects Japan。

北村 充: "フレーム構造物の固有値問題における有限要素解析の事後誤差評価に関する研究" 日本造船学会論文集. 181. 341-346 (1997)

Mitsuru Kitamura：“框架结构特征值问题的有限元分析的后验误差评估研究”日本造船学会汇刊 181. 341-346 (1997)。

Hisashi Nobukawa: "Optimization of Engine Room Structure under Static and Dynamic Constraints Using Genetic Algorithms" J.Soc.Naval Architects Japan. Vol.1183 (printing). (1998)

Hisashi Nobukawa：“使用遗传算法在静态和动态约束下优化机舱结构”J.Soc.Naval Architects Japan。