Effects of loading rate and loading direction on the compressive failure behavior of a 2D triaxially braided composite

被引：21
|
作者：
Zhao, Zhenqiang [1 ,2 ,3 ]
Liu, Peng [2 ,3 ]
Dang, Haoyuan [2 ,3 ]
Nie, Hailiang [4 ]
Guo, Zaoyang [1 ]
Zhang, Chao [2 ,3 ]
Li, Yulong [2 ,3 ]
机构：
[1] Harbin Inst Technol, Sch Sci, Shenzhen 518055, Guangdong, Peoples R China
[2] Northwestern Polytech Univ, Dept Aeronaut Struct Engn, Xian 710072, Shaanxi, Peoples R China
[3] Shaanxi Key Lab Impact Dynam & Its Engn Applicat, Xian 710072, Shaanxi, Peoples R China
[4] Tubular Goods Res Ctr CNPC, Inst Safety Assessment & Integr, State Key Lab Performance & Struct Safety Petr Tu, Xian 710077, Shaanxi, Peoples R China
来源：
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING | 2021年 / 156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：
Triaxially braided composites; Strain rate effect; Compression; Electromagnetic Hopkinson bar; Failure mechanism; STRAIN-RATE; CARBON-FIBER; TENSILE BEHAVIOR; IMPACT DAMAGE; MODEL;
D O I：
10.1016/j.ijimpeng.2021.103928
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The effects of loading rate and loading direction on the compression failure behavior of a typical 0 degrees/+/- 60 degrees twodimensional triaxially braided composite (2DTBC) were studied by compressing brick specimens cut from an eight-layer 2DTBC panel along the axial and transverse directions. Quasi-static tests were conducted using an electronic universal testing machine, and a novel Electromagnetic Split Hopkinson Pressure Bar (E-SHPB) was employed to carry out dynamic tests. High-speed cameras were employed to monitor the progressive failure process in the specimen during the tests, and the failure morphology was examined using an optical microscope. The test results show that both axial and transverse compression strength noticeably increase under dynamic loading conditions. Moreover, different failure mechanisms for the 2DTBC under axial and transverse compression were observed, and the influence of loading rate on the compressive failure behavior of the 2DTBC was systematically investigated.
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页数：11
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