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51B钢弹、92式9mm钢弹、92式5.8mm钢弹,弹头的发射弹速与弹道枪管、发射药量关系对比研究
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作者 陈卫国 张少娜 +2 位作者 杨杰 程硕 杨金喜 《中国安全防范技术与应用》 2024年第1期32-36,共5页
在公安行业标准中,一般将79枪/51B弹、92枪/9mm钢弹、92枪/5.8mm钢弹定为同一防弹级别。本文对这三种枪弹的发射弹速与弹道枪管、发射药量的关系进行研究,通过调整子弹的装药量(发射药量)调整弹速,得到这三种枪弹的弹头发射速度与装药... 在公安行业标准中,一般将79枪/51B弹、92枪/9mm钢弹、92枪/5.8mm钢弹定为同一防弹级别。本文对这三种枪弹的发射弹速与弹道枪管、发射药量的关系进行研究,通过调整子弹的装药量(发射药量)调整弹速,得到这三种枪弹的弹头发射速度与装药量之间的关系,建立其子弹弹速与发射药量的关系数据库,为这三种枪弹的V50测试提供依据。 展开更多
关键词 发射弹速 道枪管 发射药量 数据库
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Micro-seismic wave's propagation law and its numerical simulation 被引量:1
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作者 逄焕东 姜福兴 林培兰 《Journal of Coal Science & Engineering(China)》 2006年第2期40-42,共3页
Deduced the propagation rule of longitudinal and transverse wave. On the basis of this, propagation rules in attenuated visco-elastic media and varied Lame coefficient were put forward as well. The subsequent numerica... Deduced the propagation rule of longitudinal and transverse wave. On the basis of this, propagation rules in attenuated visco-elastic media and varied Lame coefficient were put forward as well. The subsequent numerical analysis found that in a small scope longitudinal and transverse wave could be considered as homogeneously propagating when faultages and joints were not taken into account. The existence of lane hindered the wave's propagation, and it made the velocity gradient change in a local vicinity area. Therefore velocity varied in different direction. 展开更多
关键词 micro seismic non-homogenization elastic wave velocity field
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