Study on the Visco-Elastic Constitutive Model of PBX

A statistical visco-elastic meso-damage constitutive model of PBX was established using the generalized energy release rate and the dynamical fracture mechanics is combination with the visco-elastic effect,adding the constitutive model into Ls-dyna algorithm and simulating the plane impact experiment.The simulated results showed that the constitutive model established can well present the dynamical damage mechanical response of PBX under the impact load.