書誌事項
- タイトル別名
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- A Study on Coupled Pitch and Heave Porpoising Instability of Planing Craft (2nd Report)
- 高速滑走艇の縦不安定現像に関する基礎的研究(第2報)
- コウソク カッソウテイ ノ タテフアンテイ ゲンゾウ ニ カンスル キソテキ
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抄録
Following the first report in which the porpoising motion of a planing craft in calm water is measured and discussed, an experimental investigation on hydrodynamic forces acting on the hull is carried out in the present report. Captive model tests are carried out to find the influence of the restoring forces on the dynamic instability. The results show that there are significant nonlinear effects of motion amplitudes on the restoring forces, and that the coupled heave restoring coefficient from pitch motion decreases with advance speed and becomes negative at high advance speed. The negative coefficient is in the same order as other coefficients. This result suggests that there is a possibility of occurrence of parametric excitation due to the energy exchange between heave and pitch motions. Forced motion tests are carried out to reveal the influence of the added mass and the damping on the dynamic instability, The results show significant nonlinear effects of motion amplitudes appear on the added mass and the damping as well as the restoring coefficient. The measured hydrodynamic forces are compared with the calculated ones using a non-linear prediction method based on a strip method. The results show that the calculated results are not in good agreement with the experimental one
収録刊行物
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- 関西造船協会誌
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関西造船協会誌 227 (0), 71-78, 1997
公益社団法人 日本船舶海洋工学会
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詳細情報 詳細情報について
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- CRID
- 1390282679471555328
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- NII論文ID
- 110003872151
- 10007208170
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- NII書誌ID
- AN00349587
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- ISSN
- 2433104X
- 03899101
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- NDL書誌ID
- 4193437
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可