| 随机风浪下的游艇稳性可靠度计算 |
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| 引用本文： | 蔡应强,林少芬,王欢欢.随机风浪下的游艇稳性可靠度计算[J].船舶工程,2018,40(3):10-14. |
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| 作者姓名： | 蔡应强 林少芬 王欢欢 |
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| 作者单位： | 集美大学轮机工程学院,福建厦门361021;福建省船舶与海洋工程重点实验室,福建厦门361021;集美大学轮机工程学院,福建厦门361021;福建省船舶与海洋工程重点实验室,福建厦门361021;集美大学轮机工程学院,福建厦门361021;福建省船舶与海洋工程重点实验室,福建厦门361021 |
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| 基金项目： | 福建省自然科学基金项目（2016J01248）；福建省中青年教师教育科研项目（JAT160280；JAT170314）； 福建省科技厅高校产学研重大项目（2014H6020）；集美大学学科建设基金项目（ZC2016028）。 |
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| 摘 要： | 建立游艇横摇运动微分方程,利用马尔科夫过程理论和路径积分法进行求解,得到游艇横摇角概率密度函数。借鉴结构可靠性计算方法建立游艇稳性概率计算模型,采用当量正态化法(JC法)求解得到游艇稳性可靠度。实例计算表明:游艇在不同海域下的稳性可靠度存在一定差异,随着外界风浪增大,游艇稳性可靠度呈逐步下降趋势,且都存在一个快速下降的波高区间。该方法能够更科学地评判游艇在不同航行条件下的稳性状况,是游艇稳性横准研究的发展方向之一。
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| 关 键 词： | 游艇稳性 可靠度 随机风浪 路径积分法 当量正态化法 |
| 收稿时间： | 2017/10/13 0:00:00 |
| 修稿时间： | 2018/3/19 0:00:00 |
Reliability Calculation of Yacht Stability in Random Wind and Wave |
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| CAI Ying-qiang,Lin Shao-fen and Wang Huan-huan.Reliability Calculation of Yacht Stability in Random Wind and Wave[J].Ship Engineering,2018,40(3):10-14. |
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| Authors: | CAI Ying-qiang Lin Shao-fen and Wang Huan-huan |
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| Institution: | School of Marine Engineering,Jimei University,School of Marine Engineering,Jimei University,School of Marine Engineering,Jimei University |
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| Abstract: | Stability is an important index of yacht safety. The instability of a yacht in random wind and wave is a random event. Nonlinear differential equations of yacht rolling motion was established. The probability density of the yacht rolling angle was obtained by path integral method. A probability calculation model of yacht stability was established. The stability and reliability of a yacht in different winds and waves was analyzed and calculated by using the JC method. It can judge the yacht stability in different navigation conditions more scientifically, which is one of the research directions about yacht stability. |
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| Keywords: | Yacht stability Reliability Random wind and wave Path integral method JC method |
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