Research On Evaluation Method Of Typical Tank Damaged By Hit

No matter now and in the future,tanks,as the king of land warfare,have an irreplaceable position on the battlefield.The timely and accurate assessment of the damage of the hit tanks is extremely important for combat command.Therefore,in order to study the damage assessment method of the tank target being hit,this article mainly conducts research from three aspects:First,the power calculation of the armor-piercing projectile warhead,including the remaining speed of the armor-piercing projectile penetrating the medium-thick target plate and the remaining projectile length research,establishing the secondary fragmentation field model formed after the armor piercing;followed by the analysis and modeling of key components of a certain type of tank system,including the vulnerability analysis and modeling of key components of the tank,and the calculation of the weight of the tank system and key components based on the analytic hierarchy process;Finally,a calculation method of tank damage level based on AHP&Fuzzy Sets method is proposed.The calculation method is used to determine the parameters in the fuzzy matrix,and the qualitative damage degree is quantified with the help of fuzzy comprehensive evaluation method,and then the cloud model is used to calculate the damage grade.Based on the above method,the damage of the armor-piercing projectile when it shoots vertically on the surface of the tank and the damage of the armor-piercing projectile when the tank is attacked at different pitch angles are calculated respectively.The damage of a certain type of tank under a certain type of armor-piercing projectile is as follows.The damage probabilities of level I,II,III and IV in front of the tank are 71.4%,20.7%,6.7%and 1.2%respectively;The damage probability of grade I,II,III and IV behind the tank is 57.7%,15.7%,24.2%and 2.4%respectively;The damage probability of level I,II,III and IV on the left side of the tank is 52.5%,20.6%,15.0%and 11.9%respectively;The damage probability of level I,II,III and IV on the right side of the tank are 53.1%,19.0%,15.5%and 12.4%respectively;The calculation results show that when the armor-piercing projectile attacks the left and right sides and the back of the tank,it is easy to cause damage to the tank at level III and above.Especially the left and right sides have a large impact area,which makes it easier to lose combat ability.Attacks on the front of the tank cause level III and The probability of the above damage is the smallest.The effect of the intersection of projectiles and missiles on the damage level of the tank is calculated.The calculation results show that when the armor-piercing projectile attacks the tank from the left side and the back of the tank,the pitch angle of the armor-piercing projectile rises from 0°to 90°,and the total damage of the tank is level III and above.The area first increases and then decreases with the increase of the pitch angle.When the pitch angle is 60°and 70°,the total damage area peaks(8.18 m~2 and 7.95 m~2).When the armor-piercing projectile attacks the tank at a pitch angle of 0°,the damage level changes with the incident direction of the armor-piercing projectile.The tank damage evaluation method and research results proposed in this paper can be used to calculate the damage level of different armored targets under different warheads by establishing a variety of models.It can also provide important reference value and guiding significance for the optimization design of armor-piercing elastic energy and the layout of the tank’s protection system.