焊接接头动态力学的应变率效应

Dynamic Strain Rate Effect of Welds

采用Hopkinson压杆装置对焊接接头进行了不同冲击速度下的冲击压缩实验 ,获得了接头不同部位的动态力学性能曲线 ;研究了应变率对焊接接头力学性能的影响 .结果表明 :焊接接头动态力学性能的应变率效应明显 。

By means of split Hopkinson pressure bar (SHPB), tests for weldment subjected to different impact rate were carried out. Relevant dynamic mechanical diagram was obtained. The effect of strain rate on weld’s dynamic mechanical behavior was studied. The results show that strain rate affects the mechanical heterogeneity and dynamic behavior of weld.