鉴于钢管良好的变形能力、吸能特性和夹层结构在强度、刚度上的优势，提出了分层结构为钢板-钢管芯层-钢板的三明治型抗爆组合板。对芯层钢管数量为5根、4根、3根的组合板进行了TNT装药量为1kg的接触爆炸试验，考察了各板在承受接触爆炸冲击荷载时的变形及破坏情况，并对变形破坏过程进行了理论分析和数值模拟。研究表明：钢板夹钢管组合板承受接触爆炸冲击荷载时，主要发生局部压缩变形。钢管变形是组合板耗散能量的主要途径。增加钢管数量，增大钢板厚度，增大钢管管壁厚度，均可减小组合板在接触爆炸条件下的变形破坏，提高抗接触爆炸性能。
Abstract
Steel tubes process excellent performance of energy absorption.Sandwich panels have advantages in strength and rigidity.The tube-core sandwich panels used for blast resistant were studied in this paper.Contact blast experiments with 1 kg TNT were carried out to test the five-tube-core sandwich panel,the four-tube-core sandwich panel,and the three-tube-core sandwich panel.For each panel,the deformation and failure subjected to contact blast loading were investigated.The process of deformation and failure were researched by theoretical analysis and numerical simulation.Researches show that the tube-core sandwich panels consume energy mainly by local compression deformation.To reduce the deformation and improve the contact blast resistance of the sandwich panels,it is effective to increase the number of tubes or enlarge the thickness of face sheets and tube walls.
关键词
接触爆炸 /
钢管 /
组合板 /
变形破坏 /
试验研究 /
理论分析 /
数值模拟
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Key words
contact blast /
steel tube /
sandwich panel /
deformation and failure /
experimental investigation /
theoretical analysis /
numerical simulation
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