| 舰艇抗冲瓦整体冲击隔离新概念及其机理研究 |
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| 引用本文： | 汪玉,华宏星,谌勇,杜俭业,杜志鹏.舰艇抗冲瓦整体冲击隔离新概念及其机理研究[J].科技导报(北京),2009,27(3). |
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| 作者姓名： | 汪玉 华宏星 谌勇 杜俭业 杜志鹏 |
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| 作者单位： | 汪玉,杜俭业,杜志鹏(海军装备研究院,北京,100161);华宏星,谌勇(上海交通大学振动、冲击、噪声国家重点实验室,上海,200030)
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| 摘 要： | 基于声阻抗失配原理,提出了舰艇抗冲瓦对水下爆炸冲击的整体隔离新概念.采用波动理论和Taylor平板模型.以冲击波在水、覆盖层、空气层、船体钢中的传播过程为研究对象,建立了实心敷设层结构(消声瓦的简化模型)和带空腔敷设层结构(抗冲瓦)的流固耦合模型.利用Abaqus软件建立舰艇抗冲瓦三维冲击响应模型.算例结果表明,抗冲瓦能够很好地隔离水下爆炸冲击波.大大降低船体结构材料应力和加速度冲击响应峰值,并能在广泛的频域内显著降低舰艇冲击响应.
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| 关 键 词： | 抗冲瓦 冲击隔离 阻抗失配 水下爆炸 |
New Concept of Ship Anti-Shock Layer in Underwater Explosion Wave Isolation |
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| WANG Yu,HUA Hongxing,CHEN Yong,DU Jianye,DU Zhipeng. Naval Academy of Armament,Beijing ,China . State Key Laboratory of Vibration,Shock , Noise,Shanghai Jiao Tong University,Shanghai ,China.New Concept of Ship Anti-Shock Layer in Underwater Explosion Wave Isolation[J].Science & Technology Review,2009,27(3). |
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| Authors: | WANG Yu HUA Hongxing CHEN Yong DU Jianye DU Zhipeng Naval Academy of Armament Beijing China State Key Laboratory of Vibration Shock Noise Shanghai Jiao Tong University Shanghai China |
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| Institution: | WANG Yu1,HUA Hongxing2,CHEN Yong2,DU Jianye1,DU Zhipeng11. Naval Academy of Armament,Beijing 100161,China 2. State Key Laboratory of Vibration,Shock , Noise,Shanghai Jiao Tong University,Shanghai 200030,China |
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| Abstract: | The concept of ship anti -shock layer in underwater explosion wave isolation is developed based on the impedance mismatch theory. Wave equation and Taylor's flat plate model are adopted to derive fluid-structure interaction equations for the solid layer and the cavity layer. The numerical examples indicate that the ship anti -shock layer can isolate the underwater explosion wave from ship hull. The ship hull shock peak stress, acceleration and shock spectrum are attenuated significantly when the ship hull i... |
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| Keywords: | anti-shock layer shock isolation impedance mismatch underwater explosion |
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