弹体正侵彻混凝土厚靶的运动规律理论研究  

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

作　　者：郭香华[1] 张庆明[1] 何远航[1] 

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《北京理工大学学报》2011年第3期269-271,293,共4页Transactions of Beijing Institute of Technology

基　　金：国家"八六三"计划项目(2009AA8014510B)

摘　　要：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.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,both concrete failure properties and projectile compressibility have significant influence on the projectile penetration effects.The developed model predicts the penetration properties of high velocity projectiles quite well.

关 键 词：正侵彻 Mohr-Coulomb破坏准则 Gruneisen状态方程 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程]