With the numerical simulation and high-speed camera, a series of images of dispensing of rod from different devices were obtained. The process of dispensing of rods driven by aiming explosive charge and the influence ...With the numerical simulation and high-speed camera, a series of images of dispensing of rod from different devices were obtained. The process of dispensing of rods driven by aiming explosive charge and the influence of different structures on dispensing velocity and angle of KE-rod were studied through analyzing the images. All these can be helpful for the design of new concept anti tactical ballistic missile(ATBM) KE-rod warheads.展开更多
A model for the tendency of fragmentation of a long rod projectile subjected to armour components in add-on armours such as reactive armour and active protection systems is presented. The model is based on studies of ...A model for the tendency of fragmentation of a long rod projectile subjected to armour components in add-on armours such as reactive armour and active protection systems is presented. The model is based on studies of the interaction between a cylindrical streamlined projectile and moving thin plates(backwards moving like the front plate in a reactive armour panel and forwards moving like the rear plate in a reactive armour panel).The assumption behind the model is that the sliding force, with velocity vslidebetween the projectile and the plate, gives rise to a transverse velocity vtransof the projectile segment it passes, which will deflect the projectile segment. This deflection is assumed to be a major reason for the fractures that can emerge along the projectile. The velocity, geometry and material of the projectile and the plate are of importance for the fragmentation of the projectile and the dimensionless parameterδ? = v trans vslideexpresses how these parameters influence the break-up tendency. Experiments and simulations have verified that the identifiedδ?-parameter predicts an increased amount of fragmentation of the projectile with increasing value of this parameter.展开更多
文摘With the numerical simulation and high-speed camera, a series of images of dispensing of rod from different devices were obtained. The process of dispensing of rods driven by aiming explosive charge and the influence of different structures on dispensing velocity and angle of KE-rod were studied through analyzing the images. All these can be helpful for the design of new concept anti tactical ballistic missile(ATBM) KE-rod warheads.
基金the Swedish Armed Forces for the research fund that has financed this work
文摘A model for the tendency of fragmentation of a long rod projectile subjected to armour components in add-on armours such as reactive armour and active protection systems is presented. The model is based on studies of the interaction between a cylindrical streamlined projectile and moving thin plates(backwards moving like the front plate in a reactive armour panel and forwards moving like the rear plate in a reactive armour panel).The assumption behind the model is that the sliding force, with velocity vslidebetween the projectile and the plate, gives rise to a transverse velocity vtransof the projectile segment it passes, which will deflect the projectile segment. This deflection is assumed to be a major reason for the fractures that can emerge along the projectile. The velocity, geometry and material of the projectile and the plate are of importance for the fragmentation of the projectile and the dimensionless parameterδ? = v trans vslideexpresses how these parameters influence the break-up tendency. Experiments and simulations have verified that the identifiedδ?-parameter predicts an increased amount of fragmentation of the projectile with increasing value of this parameter.
