弹体正侵彻混凝土厚靶的运动规律理论研究

为研究弹体正侵彻混凝土厚靶的运动规律,分别用修正的Mohr-Coulomb破坏准则和Gruneisen状态方程描述高速侵彻下混凝土材料的屈服行为和弹体材料的体积变形,并考虑弹体材料的侵蚀效应,建立了弹体正侵彻半无限混凝土靶的运动方程和混凝土响应描述方程.理论模型的数值解表明,当着靶速度较高时,混凝土的破坏特性和弹体的可压缩性对侵彻效果有较显著的影响.所发展的理论模型能够较好地预测高速弹丸的侵彻特性.

Study on Kinematics Properties of Projectile Normal Penetration into Semi-Infinite Concrete Targets

To study the kinematics properties of projectile normal penetration into semi-infinite concrete targets,the kinetic equations describing normal penetration into semi-infinite concrete targets and equations determining concrete response were developed on the basis of concrete volumetric deformation,failure behavior and projectile material erosion,which are depicted by the modified Mohr-Coulomb failure criteria and Gruneisen EOS.Numerical solutions of theoretical model show that,when the hit velocity is high,...