【摘 要】
：
The response of sandwich structures to underwater blast loading is analyzed experimentally and computationally.The analysis focuses on the effect of varying structural attributes on energy dissipation
【机 构】
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The George W.Woodruff School of Mechanical Engineering School of Materials Science and Engineering G
【出 处】
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爆炸科学与技术国家重点实验室2011年学术年会暨International Workshop on Intensive
论文部分内容阅读
The response of sandwich structures to underwater blast loading is analyzed experimentally and computationally.The analysis focuses on the effect of varying structural attributes on energy dissipation and deformation.The structures analyzed are planar sandwich plates with polymer foam cores and fiber-reinforced polymer composite facesheets.The thickness of the facesheets is varied under the conditions of constant material properties and core dimensions.Experiments use a newly developed water-based impulsive loading facility.Finite-element simulations carried out account for underwater blast loading through the use of the Mie-Gruneisen equation-of-state of a linear Hugoniot form and a modified Drucker-Prager core crushing model.The results show that there exists an optimal thickness of the facesheets which maximizes energy absorption in the core and minimizes the overall deflection of the structure.
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