动能弹丸冲击侵彻混凝土靶数值模拟分析

Numerical simulation of kinetic energy projectile penetrating two kinds of concrete targets

应用显式动力有限元程序,对Φ37mm弹丸冲击侵彻普通混凝土及钢纤维混凝土问题进行了数值模拟分析。为了描述混凝土材料的非线性变形及断裂特性,计算中引入了Holmquist-Johnson-Cook累积损伤材料模型,侵彻深度计算结果与试验数据相吻合,并得到了侵彻过程中的主要物理图像和曲线。在此基础上分析研究了钢纤维混凝土与普通混凝土抗弹丸冲击侵彻性能的异同之处。

Kinetic energy projectile（Ф537mm） penetrating normal concrete and steel fiber reinforced concrete（SFRC） targets are simulated by the finite element method. To describe nonlinear deformation and fracture characteristics of concrete materials, Holmquist-Johnson-Cook constitutive relations and damage model are incorporated into computations. The numerical results of penetration depth are in good agreement with experimental data and the main physical figures and patterns are obtained. The anti-penetration characteristics of the steel fiber reinforced concrete and the normal concrete are studied.