| In the modern warfare,urban warfare,counter-terrorism,peacekeeping and maintaining stability has gradually become a main form of battle.In order to meet the need of urban warfare,the missile that not only can open the hyperchannel through the wall for infantry,but also keep the main structure of the building has been created.The shell does not contain explosives and fuze,which is mainly used to open up a fast channel on the wall for infantry,furthermore,can effectively produce damage and destruction on the personnels and equipment hiding in the building and fortifications in urban warfare whose main operational objects are urban reinforced concrete buildings,brick-concrete structure and impermanent solid reinforced concrete fortification,light armored vehicles,temporary shelters etc.Based on the theoretical analysis and method of numerical simulation combined with experimental,the paper introduces development program of a certain PELE bomb from the aspects of overall structure,strength analysis,function efficiency and experimental results,which can provide theoretical basis and technical support for design and improvement of the same type of PELE bomb.The main research work of this paper is as follows:(1)Through the comparative analysis of operational requirements and active products,the important role of PELE in urban warfare has been defined.Moreover,the present situation and development at home and abroad is presented in the paper.(2)Based on the analysis of the design and function principle of each part,the design of the overall development program of the PELE is presented.Meanwhile,the paper has researched the emission strength,interior and exterior ballistic parameters of overall program through the establishment of three-dimensional model,numerical simulation and the principle calculation.(3)This paper establishes a mode and does a simulation research on the penetration process that PELE penetrates the reinforced concrete and mean armored target etc.It also analyses the process that the fin cuts steel mesh.The concrete will form an hourglass perforation when radial projectile penetrates.The damage forms of concrete are mainly compression,shear and transverse extension;The fracture mode of front steel is mainly cut off by high speed fin or projectile,while the failure modes of back steel are mainly truncated by impact of expansive concrete and projectile. |
