STUDY ON LETHALITY EFFECT OF DIFFERENT QUALITY OF LITTLE FRAGMENT TO THE PERSONNEL TARGET

摘要

We studied experimentally and computationally the penetration of two little rhombusfragments into a block of ballistic gelatin for developing an improved understanding of thelethality effect to human soft tissues. During the simulation the gelatin is modeled as anisotropic and homogeneous elastic-plastic material. A high speed camera was used to recordthe process of the fragment penetrated the gelatin block in the experiment. The experimentaland stimulant results showed that the maximum diameter of the temporary cavity and thepenetration depth are influenced by the mass and velocity of fragment. Furthermore, thetime histories of the velocities and displacements have a same law of the 0.15g and 0.25grhombus fragments, but the time of the temporary cavity expansion and shrink are differentby the two different fragments as the same velocity. The agreement between computedresults and experimentally measured ones have also been studied.