2011年 第6卷 第3期
《机械工程前沿（英文）》 >> 2011年 第6卷 第3期 doi: 10.1007/s11465-011-0237-8
Measurement of dynamic fracture toughness and failure behavior for explosive mock materials
1. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
2. Department of Mechanics, School of Aerospace, Beijing Institute of Technology, Beijing 100081, China
下一篇 上一篇
摘要
In this work, a pre-cracked semi-circular shaped explosive simulant was loaded using a split Hopkinson pressure bar (SHPB). A high-speed camera was used to capture the deformation and fracture process of the specimen in situ. The digital images were processed using the digital image correlation (DIC) method. Next, full displacement and strain fields were obtained. The displacement vector field shows that the specimen fractured under tensile stress action. The strain field can be used to predict the crack propagation. Results show that the method of combined DIC and SHPB is effective to study the dynamic deformation and fracture behavior of explosive simulants. In addition, the specimen was loaded using a drop weight. The fracture toughness of the specimen was preliminary measured.
京公网安备 11010502051620号
