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| Modeling of temperature rise for projectile penetrating into concrete target and analysis of influencing factors |
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Abstract A large amount of heat is generated by friction in the process of projectile penetration, resulting in a large increase in the temperature of projectile body, which may change the mechanism of action in the process of projectile penetration and further affect the penetration ability. In order to study the temperature rise of the projectile body under the action of high-speed penetration, a temperature rise calculation model for the parallel calculation of the penetration and heat conduction of the projectile body was established. Firstly, the heat flow data set of different parts of the projectile body during the whole process of penetration was obtained according to the motion equation of the projectile body and the friction heat generation mechanism, and then the temperature distribution of the projectile body at different times and positions was calculated based on the heat conduction theory and the finite difference algorithm. Based on the proposed temperature rise calculation model, the heat flux and temperature distribution of the projectile body during the process of motion are studied, and the factors affecting the temperature rise of the projectile body are discussed and analyzed. The results show that the temperature rise is very obvious in the process of penetration, and the high temperature is mainly distributed near the surface of the projectile body. The position of the highest surface temperature of the projectile in the process of penetration is related to the shape of the warhead. During the penetration time, the ratio of the heat conduction distance to the radius of the projectile decreases with the increase of the projectile size.
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Received: 19 May 2023
Published: 28 February 2024
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2024, Vol. 45 
