The cylindrical tungsten alloy fragment is often prefabricated in the directional warhead to improve the killing ability or interception ability of the warhead.To study the influence of the attitude of fragments on th...The cylindrical tungsten alloy fragment is often prefabricated in the directional warhead to improve the killing ability or interception ability of the warhead.To study the influence of the attitude of fragments on the ability to penetrate thin metal target plates,theoretical calculation,and numerical simulation are used to study the ultimate penetration velocity of cylindrical tungsten alloy fragments with different aspect ratios impacting thin metal target plates vertically with a different attitude.The angle between the axis of a cylindrical tungsten alloy fragment and the normal direction of the target plate is defined as the attitude angle of the fragment perpendicular to the target plate.It is found that when the attitude angle changes from 0°to 90°,the ultimate penetration velocity of fragments increases first and then decreases.When the length-to-diameter ratio of fragments is 1.0,1.2,and 1.5,the relative errors between the minimum and maximum values of the ultimate penetration velocity are about 11.99%,15.75%,and 14.35%,respectively.The ultimate penetration velocity of fragments increases with the increase of the projection area of fragments on the target plate.展开更多
基金supported by National Natural Science Foundation of China (Grant No.12102213)。
文摘The cylindrical tungsten alloy fragment is often prefabricated in the directional warhead to improve the killing ability or interception ability of the warhead.To study the influence of the attitude of fragments on the ability to penetrate thin metal target plates,theoretical calculation,and numerical simulation are used to study the ultimate penetration velocity of cylindrical tungsten alloy fragments with different aspect ratios impacting thin metal target plates vertically with a different attitude.The angle between the axis of a cylindrical tungsten alloy fragment and the normal direction of the target plate is defined as the attitude angle of the fragment perpendicular to the target plate.It is found that when the attitude angle changes from 0°to 90°,the ultimate penetration velocity of fragments increases first and then decreases.When the length-to-diameter ratio of fragments is 1.0,1.2,and 1.5,the relative errors between the minimum and maximum values of the ultimate penetration velocity are about 11.99%,15.75%,and 14.35%,respectively.The ultimate penetration velocity of fragments increases with the increase of the projection area of fragments on the target plate.
