Experimental study on the interaction between oblique incident blast stress wave and static crack by dynamic photoelasticity

被引：23

作者：

Chen, Cheng ^{[1
]}

Yang, Renshu ^{[1
,2
]}

Xu, Peng ^{[3
]}

Ding, Chenxi ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China

[2] China Univ Min & Technol Beijing, State Key Lab Geomech & Deep Underground Engn, Beijing 100083, Peoples R China

[3] Univ Sci & Technol Beijing, Sch Math & Phys, Beijing 100083, Peoples R China

来源：

OPTICS AND LASERS IN ENGINEERING | 2022年 / 148卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Oblique incident; Blast stress wave; Dynamic photoelasticity; Epoxy resin plate; PROPAGATION; DIFFRACTION; MEDIA;

D O I：

10.1016/j.optlaseng.2021.106764

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, the interaction between the oblique incident blast stress wave and the prefabricated crack is studied using the dynamic photoelastic method and numerical simulation method. First, blast loading dynamic photoelastic experiment system is established. Second, blast stress wave and crack interaction experiments are carried out. Epoxy resin plate is used as specimen material, while lead azide explosive is used to apply blasting load. In the experiment, the evolution of stress field at crack wall and crack tip are observed by a high-speed camera. The experimental results show that incident angle of blast stress wave has a great influence on the way the stress wave interacts with the crack and the field at the crack tip. Finally, based on the experimental results, two numerical models are conducted using FEM software. The numerical results of stress field are in good agreement with photoelastic experiment, which verifies the experimental analysis.

引用

页数：10

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