斜侵彻混凝土靶的刻槽弹体的结构响应

Structural response of the concrete target obliquely penetrated by a grooved-tapered projectile

基于刚塑性理论和侵彻载荷理论分析,将刻槽弹体简化为空间自由变截面梁,给出了弹体在侵彻混凝土早期的刚体响应行为,得到了弹体任一截面弯矩、剪力以及屈服函数的分布规律。基于此理论分析,得到了刻槽弹体壁厚、材料屈服强度、初速及倾角对弹体弯曲的影响规律。

In this paper,based on the projectile load analysis using the cavity expansion theory,we simplified the movement and deformation mode of the grooved-tapered projectile in the early stage of its oblique penetration into the concrete as the response behavior of a free beam under transversal and axial transient load at the end,and calculated the shear force,the moment and the yield function of each section of the projectile.In addition,we found out about how the projectile’s bending was affected by the projectile body’s thickness,yield strength,initial velocity and oblique angle.