基于空穴膨胀理论,建立了截锥形动能弹低速侵彻靶板过载计算模型,获得了着速、弹头锥度及靶板材料强度等因素对过载的影响特性。计算结果表明,在截锥形动能弹低速侵彻条件下,着速对侵彻过载影响显著,但对过载作用时间影响不大；弹头锥度和靶板材料强度对侵彻过载及过载作用时间有重要影响,侵彻过载和作用时间随弹头锥度及靶板材料强度减小而降低。最后,通过实验验证了计算结果的正确性。

A calculation model based on the cavity expansion theory is developed to predict the overloading on the truncated-conical projectile penetrating into finite thickness metallic plates at low speed. The influences of the velocity of the projectile, the projectile taper and the strength of the target material on the overloading are analyzed. The results show that the velocity of the projectile has a noticeable effect on the magnitude of overloading but a much less important effect on the period of the overloading; both the projectile taper and the strength of the target material have a significant effect on the magnitude and the period of the overloading, the magnitude and the period decrease as the taper and the velocity decrease. The predicted results are in good agreement with experimental results, which has validated the model.