Research on the Vulnerability of Artillery Barrel under Shock Wave Loading

doi:10.12382/bgxb.2023.1034

Abstract

Abstract:

In response to the lack of theoretical research methods and the incomplete construction of criterion models for the vulnerability of artillery barrels subjected to shock wave, a theoretical research method for the vulnerability of artillery barrels subjected to shock wave is proposed. A dynamic model of the artillery barrel subjected to shock wave is established based on the Euler-Bernoulli beam model and the rigid-plastic beam model. A physical damage criterion of the functional damage of the barrel is constructed according to the transition of elastic-plastic state and the degree of plastic deformation of the barrel. Based on the relationship between the natural vibration period of barrel, the positive pressure duration of shock wave and the damage criterion of shock wave, a coefficient for determining the damage criterion of shock wave is proposed, and a relationship formula for quantitatively determining the shock wave damage criterion is constructed. A mathematical model for the damage criterion of artillery barrel subjected to shock wave is established based on the similarity law of explosion. A damaging criterion for the barrel subjected to shock wave is obtained based on the proposd mathematical method. It shows that the function of the artillery barrel is damaged when C_X≥16.44.

Key words: artillery barrel, shock wave, vulnerability, damage criterion

CLC Number:

O383+.3

QIAO Zhen, CHENG Wei, WANG Heng, ZHANG Tuan, ZHOU Li. Research on the Vulnerability of Artillery Barrel under Shock Wave Loading[J]. Acta Armamentarii, 2024, 45(11): 4011-4019.

Figures/Tables 9

Fig.1 Dynamic model of barrel

Fig.2 Curve of shock wave loading

Fig.3 Deflection of the free end of barrel versus time

Fig.4 Deflection of the free end of barrel versus time

Fig.5 Curve of dynamic bending moment

Fig.6 Dynamic bending moment versus time

Fig.7 Determined coefficient λ of the damage criterion of shock wave

Table 1 Critical TNT equivalent and distance from explosive source

TNT当量/kg	爆心距/m	TNT当量/kg	爆心距/m
600	4.30	300	2.70
500	3.80	200	2.07
400	3.27

Fig.8 Critical contour line

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