| 平底结构砰击压力峰值分析 |
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| 引用本文： | 陈震,肖熙.平底结构砰击压力峰值分析[J].上海交通大学学报,2006,40(6):983-987. |
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| 作者姓名： | 陈震 肖熙 |
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| 作者单位： | 上海交通大学,船舶海洋与建筑工程学院,上海,200030 |
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| 摘 要： | 利用MSC.Dytran仿真软件研究了平底结构的入水问题,建立了二维有限元模型,对不同质量的平底结构分别以等速、初速度入水的情况进行了计算.结果发现,存在于结构与水之间的空气层充当了缓冲垫,大大减小了砰击压力;结构的质量对于砰击压力大小也有很大影响.研究表明,计算机仿真技术可以有效地用于结构入水问题,并能获得试验和理论研究难以发现的现象.
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| 关 键 词： | 平底结构 入水 砰击压力 空气垫 |
| 文章编号： | 1006-2467(2006)06-0983-05 |
| 收稿时间： | 2005-03-20 |
| 修稿时间： | 2005年3月20日 |
Analysis about the Slamming Pressure Peak Value on a Flat-Bottom Structure |
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| CHEN Zhen,XIAO Xi.Analysis about the Slamming Pressure Peak Value on a Flat-Bottom Structure[J].Journal of Shanghai Jiaotong University,2006,40(6):983-987. |
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| Authors: | CHEN Zhen XIAO Xi |
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| Institution: | School of Naval Architecture,Ocean and Civil Eng. , Shanghai Jiaotong Univ. , Shanghai 200003, China |
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| Abstract: | The water entry of a flat-bottom structure was studied by using simulation software MSC.Dytran.A 2D finite element model was built up and some cases including the flat-bottom structure with different constant velocities and initial velocities impacting the water were calculated.The results show that the air captured by the flat-bottom structure acts as a buffer cushion and reduces the slamming pressure greatly.The mass of the structure also has a great effect on the slamming pressure.The effect of air cushion and the mass of structure was analyzed and a formula was given to calculate the peak value of slamming pressure.The study shows that the simulation method is an effective way for the water entry problems. |
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| Keywords: | flat-bottom structure water entry slamming pressure air cushion |
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