弹性泡沫夹芯结构的水下爆炸响应分析

谌 勇;张志谊;华宏星;汪 玉

振动与冲击 ›› 2009, Vol. 28 ›› Issue (11) : 25-29.

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PDF(1672 KB)
振动与冲击 ›› 2009, Vol. 28 ›› Issue (11) : 25-29.
论文

弹性泡沫夹芯结构的水下爆炸响应分析

  • 谌 勇1 ;张志谊1;华宏星1;汪 玉2
作者信息 +

An analytic model for the response to water blast of one-dimensional naval structure with elastic foam coatings

  • Chen Yong 1,Z. Y. Zhang1, H. X. Hua1,Y. Wang2,
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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。

Abstract

Abstract: Theoretical modeling on the water blast response of the one-dimension naval structure coated with elastic foam is 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, inclusive of fluid/structure interaction is developed. The model addresses cavitation and incorporates the momentum of reconstituted water attached to the wet face. The first order DAA method is used to solve pressure in the spring-back and the succeeding phase. The fidelity of the analytic model has been assessed using FE simulations.

关键词

弹性泡沫 / 覆盖层 / 水下爆炸

Key words

Water blast / Elastic foam coating / Fluid-structure interaction / Spring back

引用本文

导出引用
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
Chen Yong;Z. Y. Zhang; H. X. Hua;Y. Wang;. An analytic model for the response to water blast of one-dimensional naval structure with elastic foam coatings[J]. Journal of Vibration and Shock, 2009, 28(11): 25-29

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