冲击压缩下石英玻璃柱的破坏实验研究和数值模拟
PDF下载 (466)徐 振,熊 迅,李天密,吕文银,周风华 *.冲击压缩下石英玻璃柱的破坏实验研究和数值模拟[J].宁波大学学报(理工版),2018,31(2):37-43.DOI:
XU Zhen,XIONG Xun,LI Tian-mi,L ü Wen-yin,ZHOU Feng-hua *.Experimental and numerical investigations on failure of quartz glass rod under impact compression[J].Journal of Ningbo University(Natural Science & Engineering Edition),2018,31(2):37-43.DOI:
| Title: | Experimental and numerical investigations on failure of quartz glass rod under impact compression |
| 作者: | 徐 振, 熊 迅, 李天密, 吕文银, 周风华 * |
| Author(s): | XU Zhen, XIONG Xun, LI Tian-mi, L ü Wen-yin, ZHOU Feng-hua * |
| 关键词: | 失效波; Taylor撞击; 石英玻璃柱; 破坏和破碎; 数值模拟 |
| Keywords: | failure wave; Taylor impact; quartz glass rod; failure and fragmentation; numerical simulation |
| 分类号: | O346.1 |
| 文献标识码: | A |
| 摘要: | 本文开展了一维应力冲击压缩下玻璃圆柱的压缩破坏实验研究. 利用高速气枪装置发射石英玻璃圆柱试件垂直撞击刚性壁(Taylor撞击), 采用超高速摄像机拍摄试件的冲击压缩破坏现象. 实验中观测到一个产生于碰撞边界, 向圆柱内部传播的移动破碎阵面, 即失效波. 在冲击压缩区内失效波的传播速度介于2~4mm·μs-1之间, 随着冲击压缩载荷的增大而增大, 随传播距离的增加而减小. 经过一定时间, 在试件的对向自由端区域, 产生一个拉伸应力主导的碎裂区; 与玻璃柱试件两端严重的破碎区域相比, 试件中部产生一个相对透明区, 其破碎程度较低. 采用应力波分析方法说明了试件内部不同破碎特征区域的形成机理; 采用离散元方法对实验过程进行数值模拟, 取得了与实验现象一致的结果. |
| Abstract: | In this paper we investigate the compressive failure of quartz glass rods vertically impacted on a rigid wall at high velocity (Taylor impact). The glass rod projectile is launched using a high-pressure gas gun. An ultra-high speed video camera is used to record the failure process of the glass rod. The impact creates a compressive region in the rod. It is found that starting at the impact face, a failure zone is developed in the compressive region and expands toward the far end of the projectile. The moving front of this failure zone can be viewed as a kind of “failure wave”, which travels at the rate of 2~4mm·μs-1. The speed of the failure front increases with the compressive pressure, and may decrease with the propagation depth. After the impacting process, a spallation failure zone is occasionally identified which expands in the region of near the far end of the projectile. This spallation zone is attributed to the interactions between the unloading stress wave reflected from the free end of the projectile, and the longitude unloading wave initiated at the failure zone. Compared with the compressive failure zone in the impact end region, and the spallation zone in the free end region, relatively less damage is observed in the middle region of the projectile. The experimental observations can be explained from the stress wave analysis. Numerical simulations using the discrete element method are conducted, which give the results consistent qualitatively to the experimental observations. |
| 参考文献 /References: | [1] Rasorenov S V, Kanel G I, Fortov V E, et al. The fracture of glass under high-pressure impulsive loading[J]. High Pressure Research, 1991, 6(4):225-232. [2] 赵剑衡. 冲击压缩下玻璃等脆性材料中失效波的实验和理论研究[D]. 北京: 中国科学院力学研究所, 2001. [3] 章冠人. 冲击压缩脆性材料中破碎波的几个问题[J]. 高压物理学报, 1998, 12(2):81-85. [4] 贺红亮. 冲击波极端条件下脆性介质的力学响应特性及其细观结构破坏特征[D]. 绵阳: 中国工程物理研究院, 1999. [5] Bourne N, Millett J, Rosenberg Z. On the origin of failure waves in glass[J]. Journal of Applied Physics, 1997, 81(10):6670-6674. [6] Raiser G F, Wise J L, Clifton R J, et al. Plate impact response of ceramics and glasses[J]. Journal of Applied Physics, 1994, 75(8):3862-3869. [7] Clifton R J. Analysis of failure waves in glasses[J]. Applied Mechanics Reviews, 1993, 46(12):540-546. [8] Grady D E. Dynamic failure in brittle solids[EB/OL]. [2016-10-16]. https://www.osti.gov/scitech/servlets/purl/ 10136168. [9] Kanel G I, Razorenov S V, Savinykh A S, et al. A study of the failure wave phenomenon in glasses compressed at different levels[EB/OL]. [2016-11-24]. http://aip.scitation. org/doi/10.1063/1.2139829. [10] Kanel G I, Razorenov S V, Utkin A V, et al. Influence of the load conditions on the failure wave in glasses[J]. High Pressure Research, 1998, 16(1):27-44. [11] 赵剑衡, 谭显祥, 孙承纬, 等. 用高速阴影技术研究K9玻璃中的失效波[J]. 爆炸与冲击, 2001, 21(2):150- 156. [12] Bourne N K, Rosenberg Z, Mebar Y, et al. A high speed photographic study of fracture wave propagation in glass [J]. Journal de Physique IV, 1994, 4(C8):635-640. [13] 李磊, 安二峰, 杨军. 典型建筑玻璃力学性能的SHPB实验[J]. 硅酸盐学报, 2010, 29(2):390-394. [14] Franks L P, Salem J, Zhu D. Dynamic failure of a borosilicate glass under compression/shear loading[J]. Advances in Ceramic Armor III: Ceramic and Engineering Science Proceedings, 2009, 28(5):103-111. [15] Liu W, Sun X, Chen W, et al. Modeling and characterization of dynamic failure of soda-lime glass under high-speed impact[J]. International Journal of Damage Mechanics, 2012, 21:577-598. [16] 巴明芳, 王婕斐, 杨莹莹, 等. 改性硫氧镁胶凝材料的配制及性能研究[J]. 宁波大学学报(理工版), 2014, 27(2):83-87. |
| 备注/Memo: | 收稿日期: 2017－05－03. 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（11272163, 11390361）. 第一作者: 徐振（1990－）, 男, 河南信阳人, 在读硕士研究生, 主要研究方向: 冲击动力学. E-mail: xuzhenchina1@163.com *通信作者: 周风华（1964－）, 男, 浙江宁波人, 教授, 主要研究方向: 冲击动力学. E-mail: zhoufenghua@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
