Fundamental Study on the New Method to Estimate Vibration Level on a Ship
-
- Hayashi Shigehiro
- 大阪大学大学院工学研究科
-
- Koike Kenta
- サノヤス・ヒシノ明昌 (株) (研究当時 大阪大学大学院工学研究科船舶海洋工学専攻)
-
- Ishida Katsumi
- 大阪大学大学院工学研究科船舶海洋工学専攻
Bibliographic Information
- Other Title
-
- 船舶の振動レベル推定に関する基礎的研究
- センパク ノ シンドウ レベル スイテイ ニ カンスル キソテキ ケンキュウ スイチュウ ドウジ キョクセン テキゴウ シュホウ ノ カイハツ
- 船舶の振動レベル推定に関する基礎的研究 : 水中同時曲線適合手法の開発
- Development of Curve Fit by Using Only Data in Different Water Depths
- 水中同時曲線適合手法の開発
Search this article
Abstract
The outstanding obstacle to estimate vibration level is that the precise damping of fluid and structure can not be estimated because the mechanism of the damping has not been explicated. Recently, the damping matrix based on dissipation energy caused by fluid viscosity has been obtained, and the damping matrix is expressed more rationally by introducing modulus of velocity distribution βw as a parameter to estimate the influence of the water depth. We developed a method to obtain βw both in the shallow water and in the deep water, by using experimental data in the air. But it is generally impossible to make an experiment using a real ship in the air.<BR>In this paper, we propose a method to obtain βw by using only data in different water depths. Concretely, authors incorporate reduced added matrices into transfer function by means of modal structural modification analysis, and formulate the partial differential iteration method by using the transfer function. The formulation and the results are described.
Journal
-
- Journal of the Society of Naval Architects of Japan
-
Journal of the Society of Naval Architects of Japan 1999 (186), 421-429, 1999
The Japan Society of Naval Architects and Ocean Engineers
- Tweet
Details 詳細情報について
-
- CRID
- 1390282679070851456
-
- NII Article ID
- 110003862297
-
- NII Book ID
- AN00194094
-
- ISSN
- 18842070
- 05148499
-
- NDL BIB ID
- 4983222
-
- Data Source
-
- JaLC
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
-
- Abstract License Flag
- Disallowed