首页|High-velocity projectile penetration test and theoretical calculation of pseudo fluid penetration of calcareous sand
High-velocity projectile penetration test and theoretical calculation of pseudo fluid penetration of calcareous sand
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High-velocity projectile penetration test and theoretical calculation of pseudo fluid penetration of calcareous sand
To explore the penetration resistance of calcareous sand media,penetration tests have been conducted in the velocity range of 200-1000 m/s using conical-nosed projectiles with a diameter of 14.5 mm.Further,a pseudo fluid penetration model applicable to the penetration of rigid projectiles in sand media is established according to the approximate flow of compacted sand in the adjacent zone of penetration.The correlation between the impedance function of projectile-target interaction and the internal friction features of pseudo fluid is clarified,and the effects of sand density,cone angle of nose-shaped projectile,and dynamic hardness on the penetration depth are investigated.The results verify the feasibility,wide applicability,and much lower error(with respect to the experimental data)of the proposed model as compared to the Slepyan hydrodynamic model.
Calcareous sandPenetration testsSlepyan hydrodynamic modelInternal friction penetration model
Wei Guo、Yanyu Qiu、Mingyang Wang
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State Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact,Army Engineering University of PLA,Nanjing 210007,China
School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China
Calcareous sand Penetration tests Slepyan hydrodynamic model Internal friction penetration model
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