Roll-induced bifurcation in ship maneuvering under model uncertainty

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• 作者：Anil Kumar Dash…
• 关键词：Ship maneuvering ; Twin ; propeller twin ; rudder ; PMM ; Uncertainty assessment and propagation ; Roll motion coupling ; Bifurcations ; Wind
• 刊名：Journal of Marine Science and Technology
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：21
• 期：4
• 页码：689-708
• 全文大小：2,754 KB
• 刊物类别：Engineering
• 刊物主题：Automotive and Aerospace Engineering and Traffic
  Engineering Fluid Dynamics
  Engineering Design
  Offshore Engineering
  Mechanical Engineering
  
• 出版者：Springer Japan
• ISSN：1437-8213
• 卷排序：21

文摘

In this paper, a mathematical model is developed for the maneuvering motion of a naval ship and bifurcations of its equilibrium are identified in roll-coupled motion. The subject ship is a high-speed surface combatant with twin-propeller twin-rudder system. Captive model tests are conducted for the ship using planar motion mechanism. Maneuvering coefficients are calculated by polynomial curve fitting of the test data. Uncertainty distribution in the coefficients is assumed same as that of the curve fitting errors. Uncertainty in the model coefficients is propagated to full-scale simulation results by the stochastic response surface method (SRSM). This method is computationally efficient as compared to standard Monte Carlo simulation technique. The SRSM uses polynomial chaos expansion of orthogonal to fit any probability distribution. Bifurcation analysis of the mathematical model is performed by varying the vertical center of gravity as the bifurcation parameter. Hopf bifurcation is identified. It is found that the bifurcations occur due to the coupling of roll motion with sway, yaw motion and rudder angle. In the presence of wind, roll angle response in bifurcation diagram is discussed.