Thickness Equivalent Method of 921A and Q235 Steel Plate Based on the Similarity of Projectile Penetration Residual Velocity

Abstract The penetration judgment of the projectile to target is vital evaluate its damage ability. Based on similarity residual velocity, thickness equivalent model plates with different materials proposed in this paper. Simulation parameters are validated by physical experiments. Then a series numerical simulations carried out 30CrMnSiNi2A projectiles penetrating 921A and Q235 steel plates. Results show that increase plate thickness, velocity decays linearly, while slope depends incident velocities. Simultaneously, conforms logarithmic growth as mass increases. Finally, relationship between established using ratio material strength, angle shape coefficient. can provide reference general analysis.