实现材料高应变率拉伸加载的爆炸膨胀环技术

An improved technique for dynamic tension of metal ring by explosive loading

1.
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mainyang 621900, Sichuan, China

摘要: 设计了新型的爆炸膨胀环实验加载装置，加载装置中采用爆炸丝线起爆方式，避免了传统装置中对碰爆轰波加载时的应力不均匀性。利用新型的爆炸膨胀环实验技术研究了无氧铜材料的动态性能，利用激光位移干涉仪测量了试样环的径向速度历史，处理数据获得了无氧铜材料的流动应力-塑性应变-应变率的关系，为进一步利用爆炸膨胀环实验技术研究材料在高应变率拉伸加载时的本构关系奠定了基础。
- 爆炸力学 /
- 爆炸膨胀环 /
- 冲击拉伸实验 /
- 无氧铜 /
- 高应变率
Abstract: A new setup was designed for dynamic tension of metal ring. The line initiation by exploding wire was used in the designed setup. The dynamic tensile experiments of OFHC copper rings at high strain rate were carried out by the designed setup. The radial velocity histories of OFHC copper rings were measured by a laser displacement interferometer. The stress-strain-rate relations for OFHC copper were obtained by processing the radial velocity histories of OFHC copper rings.
- mechanics of explosion /
- explosive-driven expanding ring /
- impact tensile experiment /
- OHFC copper /
- high strain rate