Tungsten ball may be divided into pure tungsten ball, tungsten alloy ball and tungsten carbide ball.
Tungsten Ball with a High-velocity Penetrating into a Medium-thick Steel Plate
A 57.5/14.5mm two-stage light-gas gun was used to launch 7mm diameter tungsten ball projectiles penetrating into an A3 steel plate with a thickness of 20mm. The projectiles impacted the target with a normal incidence at a velocity of 1.900 to 2.350km/s. A total of seven trials were conducted and none of them penetrated the target. The speed is tested by magnetic testing device with a measurement error of ±0.1%. The penetration depth and penetration hole morphology were obtained under different impact speeds. The numerical simulation of tungsten balls with a high-velocity penetrating into the steel plate was performed using AUTODYN-2D code.
Projectile and target morphology, stress distribution at different time instants were obtained. The penetration hole diameter and depth were predicted with the method of numerical simulation. It was shown that the simulated results agree well with the test ones.
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