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Open Access Article

Advances in Constructional Engineering. 2022; 2: (1) ; 1-4 ; DOI: 10.12208/j.ace.20220007.

Study on crack transfixion of granite under impact load
冲击载荷下花岗岩裂纹贯通规律研究

作者: 李进 *

中国矿业大学 北京

*通讯作者: 李进,单位:中国矿业大学 北京;

发布时间: 2022-05-09 总浏览量: 260

摘要

本文通过霍普金森杆冲击试验,分析了不同角度下试件的破坏过程的不同,试样表面的裂纹由出现到发展为贯通裂纹、直至试样失效破坏的各个阶段中,预制裂纹的角度的变化对试件裂纹产生直至试件破坏的时间影响较小,但预制裂纹的角度对裂纹的扩展方式以及扩展方向有较大的影响。

关键词: 霍普金森杆;冲击荷载;裂纹扩展

Abstract

Through hopkinson bar impact test, this paper analyzes the different failure processes of specimens at different angles. In each stage from the appearance to the development of the crack on the specimen surface to the failure and failure of the specimen, the change of the Angle of the prefabricated crack has little influence on the time of the crack generation to the failure of the specimen. However, the Angle of the prefabricated crack has great influence on the propagation mode and direction of the crack.

Key words: Hopkinson bar;Impact load; Crack propagation

参考文献 References

[1] 宋义敏,何爱军,王泽军,陈浩哲.冲击载荷作用下岩石动态断裂试验研究[J].岩土力学,2015,36(04):965-970.

[2] 朱晶晶,李夕兵,宫凤强,等.冲击载荷作用下砂岩的动力学特性及损伤规律[J].中南大学学报(自然科学版),2012(7):2701-2707.

[3] 李地元,成腾蛟,周韬,等.冲击载荷作用下含孔洞大理岩动态力学破坏特性试验研[J].岩石力学与工程学报,2015(2):249-260.

[4] 郭连军,杨跃辉,华悦含,等.冲击荷载作用下花岗岩动力特性试验分析[J].工程爆破,2014(1):1-4.

[5] Dai F,Xia K,Zuo J P, et al.Static and Dynamic Flexural Strength Anisotropy of Barre Granite[J]. Rock Mechanics and Rock Engineering . 2013 46(6):1589-1602.

[6] Huang S, Chen R, Xia K. Quantification of dynamic tensile parameters of rocks using a modified Kolsky tension bar apparatus[J]. Journal of Rock Mechanics and Geotechnical Engineering, 2010,2(2):162-168.

引用本文

李进, 冲击载荷下花岗岩裂纹贯通规律研究[J]. 建筑工程进展, 2022; 2: (1) : 1-4.