文档介绍：上海交通大学
硕士学位论文
抗纵摇舵对船舶在波浪中减摇效果研究
姓名:黄昊
申请学位级别:硕士
专业:船舶与海洋结构物设计制造
指导教师:缪;朱仁传
20080101
上海交通大学硕士学位论文

抗纵摇舵对船舶在波浪中减摇效果研究

摘要

船舶在海洋中航行,受波浪的作用,会产生六个自由度的运动。严重的纵摇运
动可导致首部砰击和甲板上浪,对船舶(特别是舰艇)的适航性、安全性、作战时
武器攻击的准确性、艇员舰上工作与生活的舒适性都有很大的影响,严重时有可能
造成舰艇失去作战能力,甚至因摇摆而至倾覆。对于纵摇运动,却尚未见到有效的
减摇装置。
针对这种现状,本文基于船舶在波浪上运动的理论,提出了一种十字型的新型
被动式抗纵摇舵。文中介绍了十字型抗纵摇舵的概念,初步讨论了十字型抗纵摇舵
的水动力作用机理及其对纵摇和垂荡方程的影响;并在此基础之上,对给定的单桨
单舵和双桨双舵船型,进行了抗纵摇舵的实用化设计。利用改进的切片理论计算方
法(STF 法)和谱分析方法,针对不同的舵型方案,考察和比较了不同航速、不同
浪向角时船舶在规则波中纵摇、垂荡的频率响应函数;进而考察和比较了不同浪级
的不规则波中船舶纵摇与垂荡的有义值、船艏和船艉的加速度、甲板上浪次数和最
小干舷等特征量。对抗纵摇舵的减摇效果的理论研究结果表明,新型抗纵摇舵的减
摇效果明显,具有良好的工程应用前景。

关键词:STF 法,谱分析方法,抗纵摇舵,船舶运动,减纵摇

I
上海交通大学硕士学位论文

An Investigation on the Effects of Pitching Reduction of Ships Equipped
with Anti-Pitching Rudders in Waves

ABSTRACT

When the ship is moving in the ocean, there are six directions of motions. Among
these, pitch sometimes will reach a large angle, which has a big influence on the
navigability of the ship, the accuracy of the weapons and the life of the staff on the naval
vessels. And if the pitch is too strong, it will have severe fore slapping and green water,
even cause the ship capsize. But till now, there is not any equipment, which can reduce the
ship’s pitch effectively.
In this paper, the concept of anti-pitching rudder is raised. The new strip theory (STF
method) and spectrum analysis theory are introduced at the beginning. And then how to
design an anti-pitching rudder and the hydrodynamic mechanism of it are discussed.
Based on all of these theories above, the anti-pitching rudder is applied to different types
of ships, and different design styles are given. According to different types of anti-pitching
rudders, and after numerical calculations to each other in a series of ship’s velocities and
incident wave angles, the amplitude of pitch and heave in regular wave are selected to
compare to see which design is more effective