发泡镍对激波衰减作用的研究

Effects of foamy metallic nickel on attenuation of blast wave

目的：探讨发泡镍对激波的衰减作用。方法：采用激波管分别对单层、双层和三层发泡镍及单层泡沫塑料进行冲击波试验。结果：发泡镍可明显降低冲击波的超压峰值，随着发泡镍层次的增加，衰减作用更为明显，三层发泡镍可降低超压峰值２６％。同时，发泡镍可使冲击波正压持续时间有所缩短，上升时间有所延长。结论：发泡镍具有明显衰减激波的作用。

Objective: To explore the effects of foamy metallic nickel on attenuation of blast wave. Methods: Single layered, double layered and 3 layered foamy metallic nickel and single layered foamed plastic were blasted with blast wave tube. Results: Foamy metallic nickel could significantly reduce the peak value of he overpressure of blast wave. Its effects of attenuation was enhanced with the number of layers. When 3 layered foamy metallic nickel was used, the peak value of overpressure of the blast wave dropped to 26%. Meanwhile, foamy metallic nickel could also shorten the sustaining time and lengthen the rising time of the positive pressure. Conclusion: Foamy metallic nickel is a good material for protection of the blast wave because it can remarkably attenuate the blast wave.