美军某型钻地弹侵彻能力数值模拟研究

Research on a Type of Earth Penetration Weapon of US Army by Numerical Simulation

利用有限元计算软件 LS—DYNA3D 对 GBU—28钻地制导炸弹以不同速度侵彻混凝土靶板进行数值模拟,分析了弹体对混凝土靶板的侵彻过程、弹体材料、侵彻初速度等问题,通过研究发现 GBU28钻地弹的弹体材料力学性能与 S—7工具钢相近,侵彻初速度可以达到1200m/s 以上。

By the numerical simulation in IS—DYNA,we tried research on the GBU28 EPW of US Army penetrating process on concrete target in different velocity.Analyzed the penetrating process,the material of the warhead,the ini- tial velocity when the bomb penetrating the target.etc..Found the mechanic performance of the material of the bomb body is similar to the mechanic performance of the S—7 steel,the,the initial penetrating velocity could more than 1200m/s.