燃气爆炸冲击加载试验研究与数值模拟

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (10) : 142-146.

论文

燃气爆炸冲击加载试验研究与数值模拟

张秀华1,2，段忠东2，李玉顺3

作者信息 +

Experimental study and numerical simulation of gas blast shock loading

ZHANG Xiu-hua1,2，DUAN Zhong-dong2，LI Yu-shun3

Author information +

文章历史 +

摘要

利用大型核爆炸模爆器—燃气爆炸冲击加载试验装置进行乙炔-空气可燃气体爆炸试验研究，探索乙炔-空气可燃气体作为爆炸源对结构抗爆试验的可行性。通过分析压力时程曲线，研究气体爆炸对结构的冲击荷载规律。采用有限元程序LS-DYNA模拟气体爆炸冲击波传播过程。结果表明，峰值压力数值计算与试验结果吻合较好；乙炔浓度达9.45%时爆炸冲击波压力最大，在模爆器内壁产生的正反射波压力高达0.815 MPa。研究结果可为此类试验加载控制奠定基础。

Abstract

Based on a large nuclear explosion simulator—Gas Blast Shock (GBS) loading system, acetylene-air flammable gas explosion experiment is performed .The feasibility is explored by using acetylene-air gaseous mixture as an explosive source to perform the anti-explosion experiment of structures. Through the blast pressure time-history curves are analyzed, laws of the blast loading on structure under gas explosion are studied. The propagation processes of gas explosion shock wave are simulated using finite element program LS-DYNA. The numerical calculation results are compared with the experiment results, and the calculating results of peak pressure are in good agreement with the experiment results. The results show that the explosion shock wave pressure is the biggest when acetylene concentration reaches 9.45%. The positive reflection overpressure peak value on the inner wall of the large nuclear explosion simulator can reach 0.815MPa. The results can provide the basis that explosion shock experiment loading control is carried out by acetylene-air gaseous mixture.

导出引用

张秀华1,2，段忠东2，李玉顺3. 燃气爆炸冲击加载试验研究与数值模拟[J]. 振动与冲击, 2015, 34(10): 142-146

ZHANG Xiu-hua1,2，DUAN Zhong-dong2，LI Yu-shun3. Experimental study and numerical simulation of gas blast shock loading[J]. Journal of Vibration and Shock, 2015, 34(10): 142-146

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