Mechanical behaviors of different property PBX were investigated experimentally by mechanical machine and split Hopkinson pressure bars(SHPB) at different strain-rates(ranged from 800s-1 to 1800 s-1).Nonlinear stress-strain curves at different strain rates were obtained,and the micro damage modes were analyzed by scanning electron microscope(SEM).The results shown that the mechanical behaviors of different property PBX exhibited obviously strain rate.For the same PBX,the elastic modulus obtained by dynamic confining pressure loading was hundreds of times of that obtained by open static loading.When the drop hammer hitted PBX with different elastic modulus from the same drop height,the peak stress of PBX with larger elastic modulus was larger.
Chen Chunyan, Nan Hai, Li Kun, Zheng Yafeng
. Mechanical behavior of different property PBX by dynamic loading[J]. New Chemical Materials, 2021
, 49(7)
: 162
-166
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.07.037
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