| 等压假设下考虑化学反应动力学影响的约束爆炸准静态压力的计算 |
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| 引用本文： | 钟巍,田宙.等压假设下考虑化学反应动力学影响的约束爆炸准静态压力的计算[J].爆炸与冲击,2013,33(4):375-380. |
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| 作者姓名： | 钟巍 田宙 |
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| 作者单位： | 西北核技术研究所,陕西西安,710024;西北核技术研究所,陕西西安,710024 |
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| 摘 要： | 为研究约束爆炸后爆炸产物与约束空间内的氧气发生化学反应对约束爆炸准静态压力的影响，从能量守恒和理想气体状态方程出发，基于爆炸后产物膨胀过程的等压假设模型，建立了约束爆炸准静态压力计算公式，并对TNT炸药爆炸后发生的化学反应与约束空间内准静态压力大小的关系进行分析。计算得到不同药量体积比下，TNT炸药约束爆炸后的准静态压力，计算结果与实验结果符合较好，可应用于其他类型炸药，并为预测约束爆炸后的准静态压力提供理论依据和估算方法。
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| 关 键 词： | 爆炸力学 准静态压力 等压假设 约束爆炸 药量体积比 |
Calculation of quasi-static pressures for confined explosions considering chemical reactions under isobaric assumption |
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| Zhong Wei,Tian Zhou.Calculation of quasi-static pressures for confined explosions considering chemical reactions under isobaric assumption[J].Explosion and Shock Waves,2013,33(4):375-380. |
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| Authors: | Zhong Wei Tian Zhou |
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| Affiliation: | 1.(Northwest Institute of Nuclear Technology, Xi’an 710024, Shaanxi, China) |
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| Abstract: | To explore the influences on quasi static pressure by the chemical reactions between explosion products and oxygen in constraint space after explosions, based on the energy conservation and ideal gas state equations, a formula was proposed to calculate the quasi static pressures after explosion in constraint space by making the isobaric assumption in the detonation product expansion process. And the following analyses were carried out for the relation of the quasi static pressure in constraint space with the chemical reactions undergone by the explosion products of TNT. The results show that for the different explosive mass volume ratios, the calculated quasi static pressures are in good agreement with the existent experimental data. This investigation can be applied to other explosives.
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