Pu-Chu Xie, Xiao-Song Wang, Chang-Ming Hu, Jian-Bo Hu, Feng-Guo Zhang, Yong-Gang Wang. Incipient spallation of high purity copper under non-one-dimensional strain shock waves [J]. Acta Physica Sinica, 2020, 69(3): 034601-1
- Acta Physica Sinica
- Vol. 69, Issue 3, 034601-1 (2020)
Fig. 1. Schematic diagram of x -y -t wave interactions in the experiment of flat flyer impacting conical target.
平板飞片撞击锥形靶实验中x -y -t 波系相互作用示意图
Fig. 2. Schematic diagram of conical target experiment.锥形靶层裂实验装置示意图
Fig. 3. Microstructure image of high-purity spallation copper by using EBSD.高纯铜样品微观结构EBSD表征照片
Fig. 4. Soft-recovered conical copper target.软回收的锥形靶样品图
Fig. 5. Optical micrograph of micro-damage distribution in the conical copper target.锥形靶内部微损伤分布特征光学显微照片
Fig. 6. Optical micrographs of micro-damage distribution in four typical regions of the conical target: (a) Region a; (b) region b; (c) region c; (d) region d.锥形靶内4个典型区域的微损伤分布光学显微照片 (a)区域a; (b)区域b; (c)区域c; (d)区域d
Fig. 7. Two-dimensional axial symmetric finite element method model of conical target impacted by planar impactor and stress profiles of central element in four typical regions: (a) Finite element method model; (b) stress profiles.平板撞击锥形靶轴对称二维有限元计算模型及4个典型区域中心单元应力时程曲线 (a)有限元计算模型; (b)应力时程曲线
Fig. 8. Damage distribution along the x direction in four typical regions of the conical target.
锥形靶内4个典型位置处沿x 方向的损伤度统计结果
Fig. 9. Optical micrographs of micro-damage distribution along y direction in the conical target: (a) Region e; (b) region f.
锥形靶内沿着y 方向微损伤分布的光学显微照片 (a)区域e; (b)区域f
Fig. 10. Damage distribution along the y direction in the conical copper target
锥形靶内沿y 方向的损伤度定量统计分布
Fig. 11. EBSD orientation maps of cross section damage at different damage stages: (a) Microvoid growth; (b) microvoid coalescence.不同损伤阶段横截面损伤分布的EBSD表征 (a)微孔洞长大; (b)微孔洞聚集
Fig. 12. Comparison of grain size distributions of the high-purity copper in cross section: (a) Original; (b) shock compressed.原始态和冲击态高纯铜晶粒尺寸分布对比 (a)原始态; (b)冲击态
Fig. 13. Free surface velocity profiles measured from different points of conical target.锥形靶3个测点处的自由面速度时程曲线
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Table 1.
Free surface velocity parameters measured from different points of conical target
三个测点的自由面速度参数
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