Failure and Ejection Behavior of Concrete Materials under Internal Blast
In order to investigate the failure and ejection behavior of concrete materials under internal blast, the default Riedel-Hiermaier-Thoma (RHT) concrete model in AUTODYN and a meshfree processor called SPH are employed in this numerical simulation. It is shown that the failure mechanisms are signific...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2016/8409532 |
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| _version_ | 1832549373881352192 |
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| author | Haifu Wang Jianguang Xiao Yuanfeng Zheng Qingbo Yu |
| author_facet | Haifu Wang Jianguang Xiao Yuanfeng Zheng Qingbo Yu |
| author_sort | Haifu Wang |
| collection | DOAJ |
| description | In order to investigate the failure and ejection behavior of concrete materials under internal blast, the default Riedel-Hiermaier-Thoma (RHT) concrete model in AUTODYN and a meshfree processor called SPH are employed in this numerical simulation. It is shown that the failure mechanisms are significantly different in these damaged zones. Crushed zone is caused by shear failure while fractured zone is induced by tensile failure, and spalled zone is formed by a combination of shear and tensile failure. In addition, the ejection velocity distribution of the fragmented concrete mass on free surface is examined. The results indicate that the ejection velocity declines monotonously with the increase of the distance to symmetry axis of computational model. On the wall of the prefabricated borehole, two types of fragmented concrete mass are analyzed, and bottom initiation is recommended to eject the fragmented concrete mass effectively. Moreover, an algorithm of average ejection speed is developed to effectively estimate the drill capacity of high velocity, energetic (HE) projectiles. At last, the validity of numerical simulation is verified by physical experiments. |
| format | Article |
| id | doaj-art-4a6d830e55b840b48d375d8e820a1f02 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-4a6d830e55b840b48d375d8e820a1f022025-02-03T06:11:29ZengWileyShock and Vibration1070-96221875-92032016-01-01201610.1155/2016/84095328409532Failure and Ejection Behavior of Concrete Materials under Internal BlastHaifu Wang0Jianguang Xiao1Yuanfeng Zheng2Qingbo Yu3State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaIn order to investigate the failure and ejection behavior of concrete materials under internal blast, the default Riedel-Hiermaier-Thoma (RHT) concrete model in AUTODYN and a meshfree processor called SPH are employed in this numerical simulation. It is shown that the failure mechanisms are significantly different in these damaged zones. Crushed zone is caused by shear failure while fractured zone is induced by tensile failure, and spalled zone is formed by a combination of shear and tensile failure. In addition, the ejection velocity distribution of the fragmented concrete mass on free surface is examined. The results indicate that the ejection velocity declines monotonously with the increase of the distance to symmetry axis of computational model. On the wall of the prefabricated borehole, two types of fragmented concrete mass are analyzed, and bottom initiation is recommended to eject the fragmented concrete mass effectively. Moreover, an algorithm of average ejection speed is developed to effectively estimate the drill capacity of high velocity, energetic (HE) projectiles. At last, the validity of numerical simulation is verified by physical experiments.http://dx.doi.org/10.1155/2016/8409532 |
| spellingShingle | Haifu Wang Jianguang Xiao Yuanfeng Zheng Qingbo Yu Failure and Ejection Behavior of Concrete Materials under Internal Blast Shock and Vibration |
| title | Failure and Ejection Behavior of Concrete Materials under Internal Blast |
| title_full | Failure and Ejection Behavior of Concrete Materials under Internal Blast |
| title_fullStr | Failure and Ejection Behavior of Concrete Materials under Internal Blast |
| title_full_unstemmed | Failure and Ejection Behavior of Concrete Materials under Internal Blast |
| title_short | Failure and Ejection Behavior of Concrete Materials under Internal Blast |
| title_sort | failure and ejection behavior of concrete materials under internal blast |
| url | http://dx.doi.org/10.1155/2016/8409532 |
| work_keys_str_mv | AT haifuwang failureandejectionbehaviorofconcretematerialsunderinternalblast AT jianguangxiao failureandejectionbehaviorofconcretematerialsunderinternalblast AT yuanfengzheng failureandejectionbehaviorofconcretematerialsunderinternalblast AT qingboyu failureandejectionbehaviorofconcretematerialsunderinternalblast |