鋼球によるアルミニウム合金製液体容器壁の貫通挙動

概要

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The dynamic behavior of thin A 2017-T 3 aluminum circular plates of an empty vessel and a water-filled vessel subjected to spherical projectile impact was investigated experimentally. Their out-of-plate plastic deformation and crack development were observed in the velocity range from 50 m/s to 200 m/s near their ballistic limit. Also, the pressure change of water in the vessel, diameter and mass of the plug, and diameter of the perforation hole were measured. It was found that the filling of water in the vessel significantly affects the plugging process and out-of-plate plastic deformation of the plates. The diameter and mass of plugs in the case of a water-filled vessel were larger than those in the case of an empty vessel. For-water-filled vessels, the out-of-plate plastic deformation of target plates was more localized and was smaller than that of empty vessels. In addition, the out-of-plane plastic deformation of plate could be approximated by the combination of an exponential function and a linear function empirically.
2002-06-25