박판의 고변형률에서의 기계적특성을 얻기위한 Tension Split Hopkinson bar의 제작 및 실험

Abstract

A split Hopkinson bar has been used for obtaining material properties in high strain rate state, In this paper, the apparatus was modified to obtain the high strain rate properties of sheet metal for an autobody. From the experiments with the new apparatus, the material properties of SPCEN in the high strain rate state have been acquired and compared with quasi-static experimental results.