Study on the Damage Constitutive Model of the PBX
In this paper, a statistical meso-damage constitutive model of the PBX is established based on the SCRAM and VISCO-SCRAM model. Firstly using the generalized energy release rate and the dynamic fracture mechanics establishing the damage evolvement of micro-cracks, then combining the meso-damage mechanics with the visco-elastic mechanical response establish the constitutive relationship of the PBX, then add the constitutive model into Ls-dyna, and use this material constitutive model simulating the plane impact experiment, the simulation result shows that this constitutive model can present the dynamic mechanical response of the PBX much better.
PBX statistical meso-damage constitutive model generalized energy release rate Ls-dyna
ZHOU Dong HUANG Fenglei
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
国际会议
西安
英文
736-738
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）