Research On Characteristics Of Semi-armor-piercing Warhead Oblique Impacting Finite Thick Target

Sea war in our country and the international pattern occupies a very important position on the overall performance of maritime weapons requirements are also increasing. Among them, the semi-armor-piercing is one powerful weapon to combat ships. Since most of the ships armor steel target plate and oblique incidence, facing the study of the dynamic response of the target after the projectile is particularly important. Therefore, this article will the following aspects of the impact is limited ramp thick steel plates by half penetrators dynamic response study:(1) The characteristics of semi armor piercing warhead first oblique impact, to carry out the oblique impact target of finite thickness characteristics analysis, oblique impact target of finite thickness engineering analysis model is presented in this paper, analysis the influence factors of the oblique impact target of finite thickness and properties, including the projectile velocity, impact angle, the characteristic parameters of target missile, material parameters, structure parameters;(2) The use of three-dimensional CAD/CAE modeling software, AutoCAD and UG on the SAP structure design of projectile, Projectile Oblique Impact and several cases are simulated and analyzed by using LS-Dyna software, including the missile and explosive structure dynamic response, the projectile residual velocity of projectile, penetrate limit velocity analysis, the projectile penetrating the target pose variation etc.;(3) According to the different plate thickness, different projectile nose structure, carry out the research of semi armor piercing warhead oblique impact target of finite thickness of the ricochet angle, give the relationship between the warhead head structure, target speed and the target angle and other factors, to provide reference for the design of semi armor piercing battle.Through the existing theoretical foundation and a large number of simulation, the final results compare ideal penetrator warwarhead portion structure of semi-thick steel target plate limited penetration, and the analysis of small-caliber semi-armor-piercing (mainly used in anti-aircraft guns and gun boats), large caliber semi-armor-piercing (mainly used guns or gun shore) and missile warwarhead has a certain reference value.