钢板夹泡沫铝组合板抗接触爆炸性能研究

Anti-contact blast performance of steel-aluminum foam-steel sandwich panels

鉴于泡沫铝材料优异的吸能特性和三明治型组合构件在强度、刚度上的优势,针对分层结构为钢板-泡沫铝芯层-钢板的100 mm厚抗爆组合板进行了装药量为1.0 kg TNT的接触爆炸试验,考察了组合板在接触爆炸条件下的变形及破坏情况,并对组合板的变形破坏过程进行了理论分析和数值模拟。研究表明,组合板承受接触爆炸荷载时,主要通过局部压缩变形和整体弯曲变形吸收耗散能量,上下面板与芯层间易发生剥离现象。钢板相同时适当增大泡沫铝芯层厚度,泡沫铝芯层相同时增加钢板厚度,均可减小组合板承受接触爆炸冲击荷载时产生的变形破坏,提高其抗爆性能。

Aluminum foam processes an excellent performance of energy absorption. Sandwich panels have advantages of strength and rigidity. A contact blast test with TNT of 1.0 kg was conducted for a 100 mm thickness steel- aluminum foam-steel sandwich panel. The deformation and failure of the panel under contact blast loading conditions were investigated. The process of deformation and failure was analyzed theoretically and simulated numerically. The results showed that the sandwich panel absorbs energy mainly through local compression deformation and overall bending one ; the upper and lower face sheets may be detached from the aluminum foam core ; to reduce the deformation of the sandwich panel, to increase the thicknesses of foam core or face sheets is an effective way to improve the anti-blast performance of the sandwich panel.