Abstract
A three-dimensional numerical model of the tank’s barrel was established using the finite element method, and dynamic process of thermal load boundary changing with projectile movement was defined. The evolution of the temperature distribution of the barrel under the firing conditions of the first projectile was obtained through numerical calculations. Furthermore, a multi-body dynamics software was used to build a shooting model for tank with a temperature field, the effects of the temperature field on the vibration of the barrel and the attitude of the projectile were studied and calculated, finally, the regular pattern of the stress of the barrel under the temperature field was analyzed. The simulation results of this model show that temperature field has a negligible effect on the barrel vibration and the projectile attitude.
Highlights
When the tank is shooting on the move, the inner wall of the tank barrel is continuously heated by the transient thermal pulse of the gunpowder combustion, which means that the temperature of the barrel rising rapidly, and the temperature of the inner wall of the barrel is significantly higher than other parts
In this study we have a clearer understanding of the process of temperature propagation of the barrel, and more importantly study the effect of the temperature field on the attitude of the projectile's muzzle when the tank is firing during travel
In the inner-ballistic period,the space behind the bomb is the area where the gunpowder and gas work, the dynamic response of the barrel is mainly determined by the effect of high-temperature gunpowder gas
Summary
When the tank is shooting on the move, the inner wall of the tank barrel is continuously heated by the transient thermal pulse of the gunpowder combustion, which means that the temperature of the barrel rising rapidly, and the temperature of the inner wall of the barrel is significantly higher than other parts. When we calculate the shooting problem during tank’s travelling, the temperature field becomes a factor that cannot be ignored. In this study we have a clearer understanding of the process of temperature propagation of the barrel, and more importantly study the effect of the temperature field on the attitude of the projectile's muzzle when the tank is firing during travel. This has reference value for improving the firing accuracy of tank artillery
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