泡沫塑料中冲击波的传播

Shock Wave in Foam Plastic

在现有 Ｓ Ｈ Ｐ Ｂ技术的基础上，将泡沫塑料作为子弹撞击铝杆，利用铝杆上的应变片测得的应力波形及泡沫塑料的应力应变曲线，合理地分析了冲击波在泡沫塑料中的传播特性，并提出了泡沫塑料中的破坏波（压实波）概念。

In an experiment on SHPB, a piece of foam plastic is ejected to a aluminum bar. By examining the stress waveform measured from the aluminum bar, the stress waveform in foam plastic and the stress-strain curve for the foam plastic are obtained, and the propagation of shock wave in the foam plastic is analyzed. A concept of 'damage wave' is presented.