Caustics experimental study on the interaction between moving cracks and voids under impact loading
In order to study the fracture characteristics of semi-disc specimens with circular defects under different impact speeds, Hopkinson rod is used to dynamically load the semi-disc specimen, and the fracture process of the semi-disc specimen is observed by the dynamic caustics test system, Through the...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Emergency Management Press
2022-04-01
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| Series: | 矿业科学学报 |
| Subjects: | |
| Online Access: | http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2022.02.008 |
| _version_ | 1811246299702362112 |
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| author | Luo Haohao Zhang Yuantong Zuo Jinjing Li Chengxiao Li Weiyu |
| author_facet | Luo Haohao Zhang Yuantong Zuo Jinjing Li Chengxiao Li Weiyu |
| author_sort | Luo Haohao |
| collection | DOAJ |
| description | In order to study the fracture characteristics of semi-disc specimens with circular defects under different impact speeds, Hopkinson rod is used to dynamically load the semi-disc specimen, and the fracture process of the semi-disc specimen is observed by the dynamic caustics test system, Through the combination of the two test systems, the fracture characteristics of the semi-disc specimens are studied, the research results show that: before the crack initiation, the focal speckle radius jumps, which is caused by the repeated loading of the incident rod. With the increase of the impact velocity, the peak stress intensity factor of the crack passing through the circular defect increases, and the propagation speed of the crack passing through the circular defect also increases significantly, which shows that the impact velocity contributes to the crack propagation. With the increase of the radius of the circular defect, the stress intensity factor of the second crack initiation at the circular defect becomes larger. |
| first_indexed | 2024-04-12T14:52:21Z |
| format | Article |
| id | doaj.art-309783aea99346888289d02c90a90770 |
| institution | Directory Open Access Journal |
| issn | 2096-2193 |
| language | English |
| last_indexed | 2024-04-12T14:52:21Z |
| publishDate | 2022-04-01 |
| publisher | Emergency Management Press |
| record_format | Article |
| series | 矿业科学学报 |
| spelling | doaj.art-309783aea99346888289d02c90a907702022-12-22T03:28:24ZengEmergency Management Press矿业科学学报2096-21932022-04-017221021610.19606/j.cnki.jmst.2022.02.008Caustics experimental study on the interaction between moving cracks and voids under impact loadingLuo Haohao0Zhang Yuantong1Zuo Jinjing2Li Chengxiao3Li Weiyu4School of Mechanics and Civil Engineering, China University of Mining and Technology-Beijing, Beijing 100083, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology-Beijing, Beijing 100083, ChinaSchool of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology-Beijing, Beijing 100083, ChinaSchool of Safety Science and Engineering, Anhui University of Science and Technology, Huainan Anhui 232001, ChinaIn order to study the fracture characteristics of semi-disc specimens with circular defects under different impact speeds, Hopkinson rod is used to dynamically load the semi-disc specimen, and the fracture process of the semi-disc specimen is observed by the dynamic caustics test system, Through the combination of the two test systems, the fracture characteristics of the semi-disc specimens are studied, the research results show that: before the crack initiation, the focal speckle radius jumps, which is caused by the repeated loading of the incident rod. With the increase of the impact velocity, the peak stress intensity factor of the crack passing through the circular defect increases, and the propagation speed of the crack passing through the circular defect also increases significantly, which shows that the impact velocity contributes to the crack propagation. With the increase of the radius of the circular defect, the stress intensity factor of the second crack initiation at the circular defect becomes larger.http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2022.02.008semicircular diskcausticscrack growth ratestress intensity factorshpb |
| spellingShingle | Luo Haohao Zhang Yuantong Zuo Jinjing Li Chengxiao Li Weiyu Caustics experimental study on the interaction between moving cracks and voids under impact loading 矿业科学学报 semicircular disk caustics crack growth rate stress intensity factor shpb |
| title | Caustics experimental study on the interaction between moving cracks and voids under impact loading |
| title_full | Caustics experimental study on the interaction between moving cracks and voids under impact loading |
| title_fullStr | Caustics experimental study on the interaction between moving cracks and voids under impact loading |
| title_full_unstemmed | Caustics experimental study on the interaction between moving cracks and voids under impact loading |
| title_short | Caustics experimental study on the interaction between moving cracks and voids under impact loading |
| title_sort | caustics experimental study on the interaction between moving cracks and voids under impact loading |
| topic | semicircular disk caustics crack growth rate stress intensity factor shpb |
| url | http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2022.02.008 |
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