Study on the mechanical behavior and penetration performance of composite tungsten alloy penetrator

To improve the penetration performance of armor-piercing projectile, a composite tungsten alloy penetrator was designed, and mechanical property tests, LS-DYNA simulations and ballistic gun tests were conducted to investigate the mechanical behavior and penetration performance differences between composite tungsten alloy penetrator and homogeneous tungsten penetrator. The local microstructure of the residual penetrator head was obtained, and the penetration mechanism of the penetrator was deeply analyzed. The results show that the deformation and failure of composite tungsten alloy penetrator exhibit localized characteristics, and the composite structure of the penetrator can reduce the number of cracks and avoid the phenomenon of large cracks cutting off the penetrator. It can better ensure the integrity of the penetrator head and the durability of penetration power, and has an increasing trend of "head form self-sharpening" ability, which has better penetration performance than homogeneous tungsten penetrator. It can provide theoretical reference for further structural optimization and performance improvement of armor-piercing projectile.