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摘要: 多孔材料药型罩由于其可压缩性,在压垮之前受炸药爆炸冲击压缩作用而使温度升高,为延迟射流的断裂时间提供了可能,估算了多孔材料药型罩压垮之前的冲击温升,并结合脉冲X光摄影研究了孔隙度对射流行为的影响。测试结果表明,一定的孔隙度范围内,射流的韧性随着孔隙度的增加而提高,射流直径随孔隙度的增加而变细。Abstract: Shock heating can cause temperature rise before the porous liner collapse process because of its porous nature, which is possible to increase the jet temperature and enhance the jet ductility. The temperature rise calculation method was presented, and the porous effect on the jet behavior was studied with the pulse X-ray photograph. It was shown that the jet ductility increase with the initial porosity within some value, and the jet diameter become small.
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Key words:
- explosion mechanics /
- porosity /
- shaped charge jet /
- powder liner /
- X-ray photograph
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