| 撞头形状对环肋圆柱壳水下碰撞特性的影响 |
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| 引用本文： | 孙清磊,刘令,吴梵.撞头形状对环肋圆柱壳水下碰撞特性的影响[J].船海工程,2012,41(4):98-101,109. |
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| 作者姓名： | 孙清磊 刘令 吴梵 |
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| 作者单位： | 1. 海军装备部舰船技术保障部,北京,100000
2. 海军工程大学船舶与动力学院,武汉,430033 |
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| 摘 要： | 静水压力与径向撞击联合作用是环肋圆柱壳所面临的最危险的载荷环境之一。采用MSC.DYT-RAN非线性瞬态有限元软件,对不同静水压力下,环肋圆柱壳受不同形状撞击体撞击的过程进行数值仿真,探讨不同撞头形状对结构变形吸能及碰撞力的影响规律,比较两种静压环境下碰撞结果的差别。分析表明,不同形状的撞头主要通过尖锐程度和接触面积来影响结构的变形及吸能,两种静压影响机理不同。
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| 关 键 词： | 环肋圆柱壳 撞头形状 水下碰撞 吸能 |
Underwater Collision Properties of Ring-stiffened Cylinder Effected by Different Shape of Strikers |
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| Authors: | SUN Qing-lei LIU Ling WU Fan |
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| Institution: | 1 Ship Technical Support Department,Naval Equipment Department,Beijing 100000,China; 2 College of Naval Architecture and power,Naval University of Engineering,Wuhan 430033,China) |
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| Abstract: | Radial collision underwater is one of the most dangerous environments for ring-stiffened cylindrical shell.MSC.Dytran was used to simulate the process of ring-stiffened cylinder impacted by various strikers under different hydrostatic pressure.Rules of structure’s deformation and energy absorption influenced by the shape of strikers were discussed,and the collision results under two different environments were compared.The results showed that strikers of different shape influence structure’s deformation and energy absorbing with its sharpness and contact area,and the influence mechanism differ under two kinds of hydrostatic pressure. |
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| Keywords: | ring-stiffened cylinder striker shape underwater collision energy absorption |
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