| 火药破碎对压力异常影响的数值模拟 |
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| 引用本文： | 翁春生,金志明.火药破碎对压力异常影响的数值模拟[J].弹道学报,1996,8(4):13-18. |
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| 作者姓名： | 翁春生 金志明 |
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| 作者单位： | 南京理工大学动力工程学院 |
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| 摘 要： | 根据火药破碎度与颗粒间应力的实验关系式，通过计算膛内火药床的颗粒间应力，直接获得不同时刻膛内不同位置的火药床的破碎度，分析了火药破碎对膛内循环过程的影响。指出火药破碎是产生异常压力甚至膛炸的主要原因。研究结果对膛内异常压力和膛炸机理分析以及装药设计均具有重要理论指导意义。
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| 关 键 词： | 内弹道学 火炮 两相流 数值模拟 |
NUMERICAL STUDIES ON THE INFLUENCE OF GRAIN FRACTURE ON ABNORMAL PRESSURE IN GUNS |
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| Weng ChunshengJin ZhimingYuan YaxiongZhang Xiaobing.NUMERICAL STUDIES ON THE INFLUENCE OF GRAIN FRACTURE ON ABNORMAL PRESSURE IN GUNS[J].Journal of Ballistics,1996,8(4):13-18. |
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| Authors: | Weng ChunshengJin ZhimingYuan YaxiongZhang Xiaobing |
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| Abstract: | The grain fracture level distributions at each instant are directly simulated based on the experimental relationships of grain fracture level intergranular stress. The influence of grain fracture on interior ballistic cycle in guns is analysed. It shows that the grain fracture is a primary factor to cause abnormal pressure in guns. The research results have an important reference for analysing breechblow mechanism and charge design. |
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| Keywords: | interior ballistics gun two phase flow numerical simulation |
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