Abstract: A SHPB device was conducted to investigate the energy transfer law and strength attenuation characteristics of phyllite with different joint angles under the same impact velocity. Dynamic characteristics of jointed phyllite under dry and saturated conditions was also analyzed. The results showed that the maximum strength is at 0°， and the minimum strength is at 60°. The peak dynamic strength of the phyllite is reduced and the ductility is enhanced under saturated state. The reflection energy of phyllite is significantly greater than the transmission energy， and these laws of the reflection energy and the transmission energy are opposite with the varying joint angle. The lag phenomenon occurs in the time required for the reflection energy and the transmission energy to reach the stable stage under saturated state. As the joint angle increases， the reflection energy ratio of phyllite increases first and then decreases， and the growth trend of transmission energy ratio and dissipation energy ratio are opposite. When the joint angle is 60°， the reflection energy ratio is the largest and the transmission energy ratio and the dissipation energy ratio is the smallest. With the increase of the joint angle， the energy dissipation and peak strength is U-shaped.

Key words: SHPB test； jointed phyllite； energy dissipation； dynamic characteristics； dynamic strength； transmission energy ratio