岩石和混凝土靶在卵形弹撞击下的侵彻研究

Penetration of rock and concrete targets struck normally by ogival-nosed projectiles

研究了岩石和混凝土靶在刚性卵形弹正撞击下的侵彻性能。基于局部化破坏的假设，改进了Wen半经验公式，认为弹体在侵彻过程中受到的平均阻力不再是一个常数，而是一个与瞬时侵彻速度有关的量。与岩石和混凝土靶的实验侵彻深度比较发现，本文的模型预测结果与实验吻合得很好。

This paper examines the penetration of rock and concrete targets struck normally by non-deformable ogiv- M-nosed projectiles over a wide range of velocities. Based on the assumption that the deformation is localized and that the mean pressure offered by the target materials to resist the projectiles is no longer a constant but a function of penetration velocity, a new formulation is developed which represents an extension to Wen~ semi-empirical model. It transpires that the present model predictions are in good agreement with the test data for limestone and concrete targets in terms of penetration depth.