多层复合装药爆炸冲击波信号能量谱

doi:10.3969/j.issn.1000-1093.2020.11.011

摘要/Abstract

摘要： 为研究多层复合装药爆炸冲击波在不同频段内的能量谱特性，进行了不同长径比多层复合装药的爆炸试验。利用小波包分析原理分析爆炸试验测得的冲击波压力信号，获得不同长径比复合装药的冲击波压力信号能量谱，得到了不同频段内冲击波压力信号的能量谱特征规律。结果表明：复合装药的冲击波能量谱值随装药长径比的增加而增加，冲击波能量主要集中在低频段，不同长径比复合装药爆炸冲击波具有不同的能量分布且各频段的能量差异明显；近距离及大长径比复合装药爆炸冲击波的低频段能量具有较大的能量增长百分比，内外同时起爆时多层复合装药的冲击波压力信号总能量是中心起爆的1.55倍。研究结果可为复合装药结构下毁伤威力可控战斗部的设计及毁伤效能评估提供参考。

关键词: 复合装药, 爆炸冲击波信号, 小波包, 能量谱, 毁伤效能评估

Abstract: The explosion tests of multi-layer composite charge with different aspect ratios were carried out to study the energy spectrum characteristics of explosion shock wave of multi-layer composite charge in different frequency bands. The shock wave pressure signal measured in explosion test was analyzed by the theory of wavelet packet analysis. The energy spectra of shock wave pressure signals of composite charges with different aspect ratios and the rule of energy spectrum characteristics of shock wave pressure signal in different frequency bands were obtained from the analyzed results. The results show that the shock wave energy spectrum of composite charge increases with the rise of the aspect ratio of charge, the shock wave energy is mainly concentrated in the low frequency range, and the explosion shock waves of composite charges with different aspect ratios have different energy distributions and the distinct energy difference in different frequency bands. The low frequency band energy of the explosion shock wave for the close-range and large aspect ratio composite charge has a large percentage of energy growth. The total energy of the shock wave pressure signal of the multi-layer composite charge under the simultaneous internal and external initiation is 1.55 times of that of central initiation. The results of this research can provide reference for the design and damage effect assessment of controllable warhead with composite charge.

Key words: compositecharge, explosionshockwave, waveletpacket, energyspectrum, damageeffectassessment

中图分类号:

TJ410.3⁺41

洪晓文，李伟兵，李文彬，徐赫阳，李军宝. 多层复合装药爆炸冲击波信号能量谱[J]. 兵工学报, 2020, 41(11): 2243-2251.

HONG Xiaowen， LI Weibing， LI Wenbin， XU Heyang， LI Junbao. Energy Spectrum of Explosion Shock Wave Signals of Multi-layer Composite Charge[J]. Acta Armamentarii, 2020, 41(11): 2243-2251.

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