Research On Penetration And Damage Effect Of Armor Piercing Explosive Projectile Into Multi-layer Composite Target

In the modern war,the air supremacy affects the trend of the war.The most direct way to seize the air supremacy is to destroy the enemy airport runway.This paper introduces the types of anti runway ammunition and the research status at home and abroad,introduces the research method of penetration problem,analyzes the response of elastic-plastic interface movement in the airport runway through the cavity expansion theory,and establishes the vertical penetration airport runway model.The force analysis of Projectile Oblique Penetration is carried out,and the motion equation of mass center of projectile penetrating airport runway is deduced,and the trajectory law of projectile centroid is analyzed.According to the relevant data,the structure of airport runway is analyzed,and the typical airport runway model is established.The penetration process of two typical airfield runways with different impact angles and velocities is studied,and the penetration results are analyzed.The concept of damage degree is established,and the damage level is divided.The explosive damage calculation of two kinds of airport runways is carried out,and the damage results are evaluated by using the damage degree.After the projectile penetrates the runway vertically,the fuze detonates with delay of 0.1ms,0.2ms,0.3ms and 0.4ms respectively,and the damage results are analyzed.The damage effect of projectile penetrating airport runway with different impact angles is studied.The influence of delay explosion of projectile on the damage depth,cavity radius and maximum damage radius of airport runway is obtained.Through the above analysis,the best initiation position of the projectile in the airport runway is determined.