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.