土介质对低速弹丸的抗侵彻性能实验研究

 通过低速条件下弹丸对硬土、中硬土和中软土不同土介质侵彻性能的实验研究，得到了弹丸对土介质垂直侵彻的弹道特点和不同弹丸速度对不同性能参数土介质的侵彻深度，拟合得到了不同土介质中侵彻深度随弹丸动压增加呈线性增加的无量纲关系式；基于低速弹丸对不同土介质具有不同侵彻性能的实验研究方法，可有效标定不同土介质抗侵彻性能和弹丸侵彻不同土介质性能；通过实验数据与Young侵彻公式计算结果的比较分析，验证了Young公式在侵彻深度小于弹丸直径3倍时的有效性。

Experimental Study on Penetration Resistance of Soil with Low-Velocity Projectile

The ballistic characteristics and penetration depth in the different soil media with vertical attitude are obtained by experiments of the low velocity projectile penetrating into hard soil,mid-hard soil and mid-soft soil.Further,the nondimensional equation on penetration depth in different soil media with the projectile dynamic pressure is fitted by test results.Based on the different penetration features with low velocity projectile penetrating the different soils in the paper,the penetration resistance of different hard or soft soil and the penetration characteristics of projectile can be calibrated effectively.Comparing with the experimental results,it is verified that Young penetration equations can be applied to the condition of penetration depth less than three times of projectile diameter.