| 高应变率加载下金属柱壳断裂的实验研究 |
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| 引用本文： | 任国武,郭昭亮,汤铁钢,苏红梅,温上捷,金山.高应变率加载下金属柱壳断裂的实验研究[J].兵工学报,2016,37(1):77-82. |
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| 作者姓名： | 任国武 郭昭亮 汤铁钢 苏红梅 温上捷 金山 |
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| 作者单位： | （中国工程物理研究院 流体物理研究所， 四川 绵阳 621999） |
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| 摘 要： | 针对高应变率加载下金属柱壳复杂动力学响应，采用高速分幅相机和多普勒探测系统阵列联合测试了钛合金柱壳在内置炸药加载下膨胀、断裂直至整体破碎的表面动态图像和局部区域的速度历史剖面。通过对比分析估算了表面裂纹萌生及爆轰产物泄露时刻的工程应变，观察表面断裂模式并获得裂纹萌生扩展与速度剖面的关联；并从回收破片断口形貌确定柱壳整体失效的断裂特征。
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| 关 键 词： | 爆炸力学 柱壳 剪切断裂 多普勒探测系统阵列 分幅 |
| 收稿时间： | 2015-05-22 |
Experimental Research on Fracture of Metal Case under Loading at High Strain Rate |
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| REN Guo-wu,GUO Zhao-liang,TANG Tie-gang,SU Hong-mei,WEN Shang-jie,JIN Shan.Experimental Research on Fracture of Metal Case under Loading at High Strain Rate[J].Acta Armamentarii,2016,37(1):77-82. |
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| Authors: | REN Guo-wu GUO Zhao-liang TANG Tie-gang SU Hong-mei WEN Shang-jie JIN Shan |
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| Affiliation: | (Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China) |
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| Abstract: | A new Dopple detection system (DPS) array and a high-speed framing camera are used to test the surface dynamics and local velocity profiles of the expansion, fracture propagation and rupture of TC4 case initiated by high explosive for the research on complex dynamic response of metal case at high-strain rate. The engineering strain at the moment of surface crack initiation and explosion product leakage is estimated through comparative analysis, and the surface crack mode and the influence of crack initiation on velocity profiles are observed. Furthermore, The fracture property of metal case is confirmed from the fracture morphologies of recovered fragments. |
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| Keywords: | explosive mechanics metal case shear fracture DPS array framing |
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