活性 PELE 侵彻钢筋混凝土靶扩孔增强行为

The reactive penetrator with enhanced lateral effect (PELE) exhibits a violent deflagration reaction when penetrating the reinforced concrete target,and the opening effect of it penetrating into the reinforced concrete target is more obvious than that of the inert filling PELE. To reveal the enhanced opening mechanism of reactive PELE,an enhanced opening model of reactive PELE penetrating into the reinforced concrete target is presented,which fully considers the radial rarefaction and the deflagration reaction of filling. The experiments of reactive PELE penetrating into the reinforced concrete targets at five impact velocities are carried out. The reaction characteristics of filling, the deformation angle-length evolution of shell, and the enhanced opening behavior are discussed based on the experimental and theoretical results. The results show that the proposed model can effectively predict the shell deformation and the target opening diameter,which the average errors are 6. 9% and 8. 5%,respectively. The reactive PELE shell exhibits double bending deformation and curling deformation modes, and the deformation angle-length evolution of shell is given. When the impact pressure exceeds than 2. 32 GPa,the neglect of the radial rarefaction wave may overestimate the reaction level of reactive PELE filling and the radial deformation of shell. The deflagration reaction of the reactive PELE filling increases the maximum opening diameter by 24. 3%.