Study on the Assessment of Damage level of Explosion Damage Elements against Personnel

doi:10.12382/bgxb.2024.0857

Abstract

Abstract:

Personnel are a critical factor in warfare.The damage effects of three types of damage elements,namely,shock wave,thermal effect and fragments,against personnel,are assessed based on the anti-personnel criterion through numerical simulation,experiment and theoretical computation tools.A damage zone of shockwave overpressure against personnel is delineated,and the relationship between scaled blast distance and personnel damage level is established,resulting in the minimum scaled blast distance of damage to personnel being 8.155m/kg^1/3.The spatial distribution of explosion thermal effect is calculated,and the free-field non-fuel air explosive or thermobaric bombs are not suitable for separate assessment of thermal effect on the personnel killing effect is put forward.The generation process of fragments is numerically simulated to obtain the quality,quantity and velocity of fragments.The simulated results are compared with the theoretically calculated results to assess the damage effect of the specific kinetic energy of fragments to personnel.The conclusions can provide reference for the design of warhead and the protection of battlefield personnel.

Key words: explosion damage element, shock wave, thermal effect, fragment, personnel damage level

LI Yin, DENG Guoqiang. Study on the Assessment of Damage level of Explosion Damage Elements against Personnel[J]. Acta Armamentarii, 2024, 45(S2): 186-192.

Figures/Tables 15

Fig.1 Two-step numerical model

Table 1 Parameters of JWL equation for TNT

ρ/(kg·m^-3)	E₀/(kJ·kg^-1)	A/GPa	B/GPa	R₁	R₂	ω
1 590	4 530	372	3.15	4.2	0.1	0.3

Table 2 Parameters of BLU-113 warhead

弹长/m	弹径/m	BLU-113战斗部
弹长/m	弹径/m	装药长/m	装药直径/m	装药量/kg	装药长径比
5.84	0.356	3.886	0.254	294	15

Fig.2 Numerical model of BLU-113 warhead

Fig.3 Comparison of simulated and experimental shock wave overpressures for TNT

Fig.4 Simulated results of shock wave flow field for TNT( left:pressure,right:temperature)

Fig.5 Peak overpressures and positive pressure impulses of TNT at different scaled blast distances Z

Table 3 Damage criterion of overpressure to personnel in GJB 5212—2004

轻微	中等	严重	极严重	来源
0.03~0.04	0.04~0.06	0.06~0.1	>0.1	国军标
0.02~0.039		0.039~0.098	>0.235	前苏联
0.0157	0.0235	0.0539	>0.186	美国
0.01~0.02	0.02~0.039	0.039~0.059	>0.059	动物实验

Fig.6 Delineation of anti-personnel zones for shock wave overpressure at different scaled blast distances Z

Fig.7 Simulated results of temperature for TNT explosions

Fig.8 Temperature of TNT at different scaled blast distances Z

Table 4 Damage criterion of thermal effect to personnel

程度	轻微	中等	严重	极严重
热通量/(kW·m^-2)	<6.4	6.4~16.0	16.0~37.5	>37.5

Fig.9 Formation process of fragments

Table 5 Damage criterion of specific kinetic energy of fragments to personnel

判据来源	中国	瑞士	德国	中国香港	中国台湾
临界比动能/ (J·cm^-2)	16	10	36	7	20

Fig.10 Three-dimensional delineation of spatial distribution region of fragments

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