The dynamic stress intensity factor (DSIF) of the single-edgedcracked specimen of PBX was computed by FEM, the results indicate thatthe DSIF is determined by the material elastic wave propagation velocity.

• 根据低应变率范围PBX在不同应变率和不同温度拉伸下的实验结果，将修正的Ramberg一osgood进行改进，结合Johnson一Cook模型的分析思路，建立非线性本构模型描述不同应变率及温度拉伸下PBX的力学行为。