泡沫铝衰减冲击波峰值压力的理论及数值分析

为比较系统地了解表面粘贴泡沫铝及其夹芯层对结构上作用冲击波峰值压力的衰减性能与影响因素，运用理论及数值模拟方法分析了泡沫铝及其夹芯层衰减冲击波峰值压力的性能。并讨论了影响泡沫铝及其夹芯层衰减冲击波峰值压力的几个主要因素。研究结果显示，在达到压实应变之前，表面粘贴泡沫铝及其夹芯层能有效地衰减冲击波的峰值压力。达到压实应变后，泡沫铝及其夹芯层对冲击波峰值压力的衰减性能下降。孔洞形式、相对密度对泡沫铝衰减冲击波峰值压力具有明显地影响，面板材料对泡沫铝夹芯层衰减冲击波峰值压力的性能也有一定的影响。要取得较好地衰减冲击波峰值压力的性能需综合考虑以上因素进行优化设计，否则可能出现粘贴的泡沫铝或其夹芯层达不到衰减结构上冲击波峰值压力的目的。

Theoretical and numerical analysis for a cladding aluminum foam sandwich panel attenuating blasting wave pressure

In order to find out the blast wave pressure attenuating property of cladding aluminum foam layer and aluminum foam sandwich layer, the analysis and numerical methods was used to study the blast wave pressure attenuating property of cladding aluminum foam layer and aluminum foam sandwich layer. The main impact factor of aluminum foam sandwich layer attenuating blast wave pressure also was disgusted by this paper. The results show that the aluminum foam layer and aluminum foam sandwich layer have the ability to attenuate the blast pressure before compressing to solid, and the ability decreasing after the aluminum foam was completely compressed. The blast attenuating property of aluminum foam and aluminum foam sandwich layer impacted by cell and relative density. The materials of face sheet also influenced the blast attenuating property of aluminum foam sandwich layer. The sandwich layer should be optimized to attenuate blast wave pressure, or its attenuating blast property may be not well for cladding aluminum foam and its sandwich layer.