Overpressure calculation model based on dynamic explosion shock wave evolution law

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Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (19) : 75-82.

ZHOU Zhirou, JIANG Haiyan, CHEN Yaoyu, YAN Jiajia, SU Jianjun

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Abstract

In order to establish the engineering calculation model of dynamic explosion shock wave overpressure, the dynamic explosion test and numerical simulation research of spherical charge were carried out, the evolution process image of dynamic explosion shock wave field was obtained, and the influence of charge speed on the propagation speed of shock wave front was quantitatively analyzed. The results show that under the influence of charge velocity, the expansion velocity of detonation products in all directions is no longer the same. The change of the expansion velocity of detonation products makes the corresponding changes in the strength and spatial distribution of shock waves. The strength of forward shock waves is higher and they are separated from detonation products earlier. On the basis of the evolution model of static explosion shock wave, by introducing a correction factor containing angle and propagation time, a calculation model of dynamic explosion shock wave overpressure of spherical charge associated with static and dynamic explosion is established. The shock wave pressures of spherical charges with different velocities and different charges calculated by the model are in good agreement with the experimental results, and the model is of certain universality.

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air blast / moving charge / shock wave front / overpressure calculation model

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ZHOU Zhirou, JIANG Haiyan, CHEN Yaoyu, YAN Jiajia, SU Jianjun. Overpressure calculation model based on dynamic explosion shock wave evolution law[J]. Journal of Vibration and Shock, 2024, 43(19): 75-82

References

[1] 何翔，杨建超，王晓峰，等.常规战斗部动爆威力研究综述[J].防护工程,2022,44(01):1-9.
He Xiang, Yang Jianchao, Wang Xiaofeng, et al. Overview of conventional warhead dynamic explosion power research[J]. Protective Engineering, 2022,44(01):1-9.
[2] 聂源，蒋建伟，李梅.球形装药动态爆炸冲击波超压场计算模型[J].爆炸与冲击,2017,37(05):951-956.
Nie Yuan, Jiang Jianwei, Li Mei. Overpressure calculation model of sphere charge blasting with moving velocity [J]. Explosion and Shock Waves, 2017,37(05):951-956.
[3] 陈龙明，李志斌，陈荣.装药动爆冲击波特性研究[J].爆炸与冲击,2020,40(01):74-82.
Chen Longming, Li Zhibin, Chen Rong. Characteristics of dynamic explosive shock wave of moving charge [J]. Explosion and Shock Waves, 2020,40(01):74-82.
[4] 蒋海燕，李芝绒，张玉磊，等.运动装药空中爆炸冲击波特性研究[J].高压物理学报,2017,31(03):286-294.
Jiang Haiyan, Li Zhirong, Zhang Yulei, et al. Characteristics of air blast wave field for explosive charge moving at different velocities[J]. Chinese Journal of High Pressure Physics, 2017,31(03):286-294.
[5] 易治，任辉启，徐流恩，等.一种采用高速摄像测量冲击波超压的非直接测量方法[J].防护工程,2012,34(01):1-9.
Yi Zhi, Ren Huiqi, Xu Liuen, et al. An indirect measuring method for measuring shock wave overpressure by high-speed camera [J] . Protective Engineering, 2012,34(01):1-9.
[6] 李斌，王雨，周志强，等.爆炸冲击波威力高速纹影测量方法[J].光学与光电技术,2018,16(02):43-49.
Li Bin, WangYu, Zhouzhiqiang, et al. High-speed schlieren photography for measuring the explosive blast wave power[J]. Optics&Optoelectronic technology, 2018,16(02):43-49.
[7] 叶希洋，苏健军，姬建荣，等.一种基于图像的冲击波波阵面参数计算方法[J].兵器装备工程学报,2020,34(01):13-16.
Ye Xiyang, Su Jianjun, Ji Jianrong, et al. Research on Image-Based Calculation Method of Shock Wave Wavefront Parameters[J]. Journal of Ordnance Equipment Engineering, 2020,41(01):87-90.
[8] 姬建荣，苏健军，陈君，等.动爆冲击波传播特性实验研究[J].兵器装备工程学报,2019,40(12):20-24.
Ji Jianrong, Su Jianjun, Chen Jun, et al. Experimental study on propagation characteristics of dynamic blast wave [J]. Journal of Ordnance Equipment Engineering, 2019,40(12):20-24.
[9] 武江鹏，贺翾，闫振纲，等.基于背景纹影技术的战斗部静动爆冲击波关联性研究[J].兵器装备工程学报,2021,42(07):62-67.
Wu Jiangpeng, He Xuan, Yan Zhengang, et al. Research on shock wave correlation of warhead static and dynamic explosion using background-oriented schlieren imaging [J]. Journal of Ordnance Equipment Engineering, 2021,42(07):62-67.
[10] 徐景林，顾文彬，刘建青，等.圆柱形爆炸容器内爆炸载荷分布规律[J].振动与冲击, 2020,39(18):276-282.
Xu Jinglin, Gu Wenbin, Liu Jianqing, et al. Distribution of blast loading in cylindrical explosive containment vessels [J]. Journal of Vibration and Shock, 2020,39(18):276-282.
[11] 杜红棉，曹学友，何志文，等.近地爆炸空中和地面冲击波特性分析和验证[J].弹箭与制导学报,2014,34(04):65-68.
Du Hongmian, Cao Xueyou, He Zhiwen, et al. Analysisand validation for characteristics of air and ground shock wave near field explosion [J]. Journal of Projectiles, Rockets, Missiles and guidance,2014,34(04):65-68.
[12] Armendt B F, Sperrazza J. Air blast measurements around moving explosive charges, Part Ⅲ: AD0114950[R]. Aberdeen: Army Ballistics Research Laboratory,1956.
[13] PATTERSON J D, WENIG J. Air blast measurements around moving explosive charges :AD0033173[R]. Aberdeen: Army Ballistics Research Laboratory, 1954.
[14] 美国陆军装备部，终点弹道学原理 [M].王维和,李惠昌,译.北京：国防工业出版社,1988:157.
U.S. Army Materiel Command. Elements of terminal ballistics [M].Translated by WANG W H,LI H C. Beijing: National Defense Industry Press,1988:157.