立式液压膨胀环实验技术研究
PDF下载 (555)张 佳,郑宇轩 *,周风华.立式液压膨胀环实验技术研究[J].宁波大学学报(理工版),2017,30(2):35-38.DOI:
ZHANG Jia,ZHENG Yu-xuan *,ZHOU Feng-hua.Experimental technique for fragmentation of liquid-driven expanding ring[J].Journal of Ningbo University(Natural Science & Engineering Edition),2017,30(2):35-38.DOI:
| Title: | Experimental technique for fragmentation of liquid-driven expanding ring |
| 作者: | 张 佳, 郑宇轩 *, 周风华 |
| Author(s): | ZHANG Jia, ZHENG Yu-xuan *, ZHOU Feng-hua |
| 关键词: | 动态拉伸; 碎裂; 液压膨胀环; 1060铝 |
| Keywords: | dynamic tension; fragment; liquid-driven expanding ring; aluminum 1060 |
| 分类号: | O346.1 |
| 文献标识码: | A |
| 摘要: | 设计一种立式液压膨胀环实验技术, 能解决现有的冲击膨胀环实验技术中试件存在二次碰撞变形的问题, 实现了碎片的软回收. 通过对装置结构的重新设计, 改变液体的驱动方向, 实现了试件动态断裂过程的可视化. |
| Abstract: | Expanding ring experiment is an important method for dynamic fragmentation of solid materials under 1D tensile loading. A liquid-driving experimental technology was developed for conducting expanding ring tests. Using liquid-driven expanding ring device, 1060 aluminum ring was fragmented and the fragments were recovered. Impact deformation of free-flying fragments was avoided through the use of "sample soft-capture" technology. The fragmentation process is observable by modifying the driving direction of the fluid. |
| 参考文献 /References: | [1] 郑宇轩, 周风华, 胡时胜, 等. 固体的冲击拉伸碎裂[J].力学进展, 2016, 46:506-540. [2] JOHNSON P C, STEIN B A, DAVH R S. Measurement of dynamic plastic flow properties under uniform stress [EB/OL]. [2016-09-12]. https://www.astm.org/DIGITAL_ LIBRARY/STP/PAGES/STP42030S.htm. [3] NIORDSONF I. A unit for testing materials at high strain rates[J]. Experimental Mechanics, 1965, 5(5):29-32. [4] GRADY D E, BENSON D A. Fragmentation of metal rings by electromagnetic loading[J]. Experimental Mechanics, 1983, 23(4):393-400. [5] GRADY D E, OLSEN M L. A statistics and energy based theory of dynamic fragmentation[J]. International Journal of Impact Engineering, 2003, 29(1):293-306. [6] GOURDIN W H. Analysis and assessment of electro- magnetic ring expansion as a high-strain-rate test[J]. Journal Applied Physics, 1989, 65:411-422. [7] ZHANG H, RAVI-CHANDAR K. On the dynamics of necking and fragmentation I: Real-time and post-mortem observations in AL6-61O[J]. International Journal of Fracture, 2006, 142(3/4):183-217. [8] 桂毓林, 孙承纬, 李强, 等.实现金属环动态拉伸的电磁加载技术研究[J].爆炸与冲击, 2006, 26(6):481-485. [9] 汤铁钢, 李庆忠, 陈永涛, 等.实现材料高应变率拉伸加载的爆炸膨胀环技术[J].爆炸与冲击, 2009, 29(5): 546-549. [10] 郑宇轩, 周风华, 胡时胜. 一种基于SHPB的冲击膨胀环实验技术[J]. 爆炸与冲击, 2014, 34(4):483-488. [11] 郑宇轩. 韧性材料的动态碎裂特性研究[D]. 合肥: 中国科学技术大学, 2013. [12] 陈磊, 周风华, 汤铁钢.韧性金属圆环高速膨胀碎裂过程的有限元模拟[J]. 力学学报, 2011, 43(5):861-870. |
| 备注/Memo: | 收稿日期: 2016－10－19. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 国家自然科学基金（11402130）. 第一作者: 张佳（1991－）, 男, 安徽宿州人, 在读硕士研究生, 主要研究方向: 冲击动力学. E-mail: 914961538@qq.com *通信作者: 郑宇轩（1986－）, 男, 江西樟树人, 博士/讲师, 主要研究方向: 冲击动力学. E-mail: zhengyuxuan@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
