Crushing Mechanism of Spherical Tungsten Alloy Fragments Penetrate Thick Steel Plate Target

Abstract

Against protection requirements for high-speed fragments on the ground weapons, we carried out the research work of crushing mechanism at different impact speeds of φ8.7 mm spherical tungsten alloy, the penetration to 603 armor steel was completed by 20 mm ballistic gun, and the ANSYS/LS-DYNA software was used to complete the numerical calculation of the penetration. We find that there are different crushing mechanisms of spherical tungsten alloy with different speeds and low speed, the crushing mechanism of fragment is mainly controlled by overall plastic deformation, shearing stripping, and squeezing at a high pressure and a high speed. The crushing mechanism will have a spallation phenomenon in addition to the crushing mechanism under high pressure.

Keywords

spherical tungsten alloy / experimental research / numerical simulation / crushing mechanism / high pressure affected zone / spallation zone