| 弹性泡沫夹芯结构的水下爆炸响应分析 |
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| 引用本文： | 谌勇,张志谊,华宏星,汪玉.弹性泡沫夹芯结构的水下爆炸响应分析[J].振动与冲击,2009,28(11):25-29. |
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| 作者姓名： | 谌勇 张志谊 华宏星 汪玉 |
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| 作者单位： | ;（1上海交通大学振动、冲击与噪声国家重点实验室，上海，200240；2 海军装备论证中心，北京 100085；）; |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 针对芯层为弹性泡沫的一维夹芯结构受远场水下非接触爆炸时的响应问题进行了理论建模分析。采用集中质量法描述芯层的动态非线性大变形，用分段模型描述了考虑冲击波入射、流体空穴、二次加载及结构回弹等一系列过程的流固耦合因素，并通过求解联立微分方程组最终得到结构的爆炸响应。分析结果同纯有限元计算结果对比表明，所提出的算法具有良好的精度，同时在计算效率上有大幅的提高。
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| 关 键 词： | 弹性泡沫 覆盖层 水下爆炸 |
| 收稿时间： | 2008-8-4 |
| 修稿时间： | 2009-5-13 |
Analytic model for the response to water blast of one-dimensional naval structure with elastic foam coatings |
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| Abstract: | Theoretical modeling on the water blast response of one-dimensional naval structure coated with elastic foam was carried out. The concentrated mass-spring model was applied to describe the nonlinear behavior of the foam. An analytic model for the wet face response,in consideration of the fluid/structure interaction was developed. The model concerns the cavitation and incorporates the momentum of reconstituted water attached to the wet face. The first order DAA method was used to solve the pressure in the spring-back and on the succeeding phase. The fidelity of the analytic model has been assessed by using FE simulations. |
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| Keywords: | water blast elastic foam coating fluid-structure interaction spring back |
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