冲击波在泡沫铝复合结构中的衰减特性理论分析

Study of the Attenuation of Shock Wave in Aluminum Foam Composite Structures

泡沫铝材料具有良好的减震和吸能的特性,但由于其材料强度较低,经常用做多层吸能结构的夹层以降低爆炸载荷对结构的破坏。为考查泡沫铝材料对爆炸冲击波的衰减效果,运用一维冲击波理论,并考虑冲击波在压缩泡沫铝材料过程中的能量损耗,分析了冲击波在泡沫铝材料中的衰减特性。同时通过计算实例,给出了泡沫铝对冲击波衰减的计算步骤,并分析了冲击波衰减的影响因素。

Aluminum foam material is widely used in multilayer energy absorbing structures because of its good damping and energy absorption properties. It is made into sandwich layers of multilayer structures to reduce the destruction of explosive load. In order to investigate the attenuation of shock wave in aluminum foam,one-dimensional shock wave theory is used to analyze the propagation of shock wave in aluminum foam material,and the energy dissipation in the process of aluminum foam compression is considered.The calculation details and relevant factors of shock wave propagation and attenuation are depicted by the calculation examples.