Experimental Investigation of the Crater Caused by Hypervelocity Rod Projectile Impacting on Rocks
To investigate the cratering effects of hypervelocity rod projectile impacting on rocks, a two-stage light gas gun was used to carry out 10 groups of small-scale experiments, whose velocity ranges from 1.5 km/s to 4.1 km/s. After each experiment, the morphology and size of the hypervelocity impactin...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2020/9768745 |
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| author | Yanyu Qiu Songlin Yue Mingyang Wang Gan Li Yihao Cheng Zhangyong Zhao Zhongwei Zhang |
| author_facet | Yanyu Qiu Songlin Yue Mingyang Wang Gan Li Yihao Cheng Zhangyong Zhao Zhongwei Zhang |
| author_sort | Yanyu Qiu |
| collection | DOAJ |
| description | To investigate the cratering effects of hypervelocity rod projectile impacting on rocks, a two-stage light gas gun was used to carry out 10 groups of small-scale experiments, whose velocity ranges from 1.5 km/s to 4.1 km/s. After each experiment, the morphology and size of the hypervelocity impacting crater were accurately obtained by using a device for image scanning. According to the morphology of the final crater, the impact crater can be divided into crushing area, spallation area, and radial crack area. Based on the experimental results of steel projectile vertical impacting on granite targets, the relationship between the depth and the diameter of the crater is analyzed, i.e., h/D≈0.1∼0.2; it shows that the depth of the crater is much smaller than the diameter of the crater, and the crater seems to be a shallow dish. The relation between the kinetic energy of the projectile and the size of the crater was discussed. With the increase of the projectile kinetic energy, it is uncertain whether the depth of the crater increases, but the volume of the crater will increase. Lastly, dimensionless analysis of the impact crater was carried out. Specifically, the limitations of point source solutions to hypervelocity rod projectile impact cratering have been proved, and there is no essential difference to calculate the final crater by using the energy scale or the momentum scale. |
| format | Article |
| id | doaj-art-459d5a53569a4288b3e836070727dbf1 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-459d5a53569a4288b3e836070727dbf12025-02-03T06:43:26ZengWileyShock and Vibration1070-96221875-92032020-01-01202010.1155/2020/97687459768745Experimental Investigation of the Crater Caused by Hypervelocity Rod Projectile Impacting on RocksYanyu Qiu0Songlin Yue1Mingyang Wang2Gan Li3Yihao Cheng4Zhangyong Zhao5Zhongwei Zhang6School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaState Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, College of Defense Engineering, Army Engineering University of PLA, Nanjing 210007, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaState Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, College of Defense Engineering, Army Engineering University of PLA, Nanjing 210007, ChinaState Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, College of Defense Engineering, Army Engineering University of PLA, Nanjing 210007, ChinaState Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, College of Defense Engineering, Army Engineering University of PLA, Nanjing 210007, ChinaTo investigate the cratering effects of hypervelocity rod projectile impacting on rocks, a two-stage light gas gun was used to carry out 10 groups of small-scale experiments, whose velocity ranges from 1.5 km/s to 4.1 km/s. After each experiment, the morphology and size of the hypervelocity impacting crater were accurately obtained by using a device for image scanning. According to the morphology of the final crater, the impact crater can be divided into crushing area, spallation area, and radial crack area. Based on the experimental results of steel projectile vertical impacting on granite targets, the relationship between the depth and the diameter of the crater is analyzed, i.e., h/D≈0.1∼0.2; it shows that the depth of the crater is much smaller than the diameter of the crater, and the crater seems to be a shallow dish. The relation between the kinetic energy of the projectile and the size of the crater was discussed. With the increase of the projectile kinetic energy, it is uncertain whether the depth of the crater increases, but the volume of the crater will increase. Lastly, dimensionless analysis of the impact crater was carried out. Specifically, the limitations of point source solutions to hypervelocity rod projectile impact cratering have been proved, and there is no essential difference to calculate the final crater by using the energy scale or the momentum scale.http://dx.doi.org/10.1155/2020/9768745 |
| spellingShingle | Yanyu Qiu Songlin Yue Mingyang Wang Gan Li Yihao Cheng Zhangyong Zhao Zhongwei Zhang Experimental Investigation of the Crater Caused by Hypervelocity Rod Projectile Impacting on Rocks Shock and Vibration |
| title | Experimental Investigation of the Crater Caused by Hypervelocity Rod Projectile Impacting on Rocks |
| title_full | Experimental Investigation of the Crater Caused by Hypervelocity Rod Projectile Impacting on Rocks |
| title_fullStr | Experimental Investigation of the Crater Caused by Hypervelocity Rod Projectile Impacting on Rocks |
| title_full_unstemmed | Experimental Investigation of the Crater Caused by Hypervelocity Rod Projectile Impacting on Rocks |
| title_short | Experimental Investigation of the Crater Caused by Hypervelocity Rod Projectile Impacting on Rocks |
| title_sort | experimental investigation of the crater caused by hypervelocity rod projectile impacting on rocks |
| url | http://dx.doi.org/10.1155/2020/9768745 |
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