混凝土厚靶在弹体正侵彻下的响应研究

在内爆理论及考虑弹体体积变形和侵蚀效应的运动方程基础上,考虑质量守恒、动量守恒及能量转换关系,建立了描述混凝土厚靶在高速弹体正侵彻下的响应区理论模型.理论模型的数值解表明,混凝土和弹体的动力学特性对正侵彻作用下混凝土的响应有显著影响.在侵彻速度较高时,有些响应区消失,而破碎区和破裂区随侵彻速度增加而迅速增大.

Study on Behavior of Semi-Infinite Concrete Targets Subjected to Projectile Normal Penetration

A theoretical model to describe the damage zone of semi-infinite concrete, which was subjected to high velocity normal penetration, was developed on the basis of implosion theory and kinetic equation combined with the factors of volumetric deformation, erosion effect, mass conservation, momentum conservation and energy transformation. Numerical solutions of the developed model show that the dynamic properties of concrete and projectile have significant effect on the penetration response. Some response zone would be disappeared when the hit velocity is high, and the aperture and damage diameter in crack/crush zone would increase substantially with the increase of hit velocity.