Numerical simulation of dynamic large deformation and fracture damage for solid armature in electromagnetic railgun
The design of solid armature of railgun should take full account of its operating conditions and material properties because the armature is subjected to dynamic loading conditions and experiences a complicated electrical, thermal and mechanical process in the interior ballistic cycle. In this paper...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2020-04-01
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| Series: | Defence Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914719303290 |
| _version_ | 1818595672910200832 |
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| author | Qing-hua Lin Bao-ming Li |
| author_facet | Qing-hua Lin Bao-ming Li |
| author_sort | Qing-hua Lin |
| collection | DOAJ |
| description | The design of solid armature of railgun should take full account of its operating conditions and material properties because the armature is subjected to dynamic loading conditions and experiences a complicated electrical, thermal and mechanical process in the interior ballistic cycle. In this paper present, we first introduced a multi-physical field model of railgun, followed by several examples to investigate the launching process. Especially, we used the explicit finite element method, in which material nonlinearity and geometric nonlinearity were accounted, to investigate the deform behaviors of solid armature. The results show that the dynamic mechanical process of armature is dependent on the armature geometry, material and exciting electric current. By the numerical simulation, the understanding of the fracture mechanism of solid armature was deepened. |
| first_indexed | 2024-12-16T11:19:45Z |
| format | Article |
| id | doaj.art-f7ec1281f40a456bb60704aca1719505 |
| institution | Directory Open Access Journal |
| issn | 2214-9147 |
| language | English |
| last_indexed | 2024-12-16T11:19:45Z |
| publishDate | 2020-04-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj.art-f7ec1281f40a456bb60704aca17195052022-12-21T22:33:29ZengKeAi Communications Co., Ltd.Defence Technology2214-91472020-04-01162348353Numerical simulation of dynamic large deformation and fracture damage for solid armature in electromagnetic railgunQing-hua Lin0Bao-ming Li1Corresponding author.; National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, P. O. Box, 210094, Nanjing, PR ChinaNational Key Laboratory of Transient Physics, Nanjing University of Science and Technology, P. O. Box, 210094, Nanjing, PR ChinaThe design of solid armature of railgun should take full account of its operating conditions and material properties because the armature is subjected to dynamic loading conditions and experiences a complicated electrical, thermal and mechanical process in the interior ballistic cycle. In this paper present, we first introduced a multi-physical field model of railgun, followed by several examples to investigate the launching process. Especially, we used the explicit finite element method, in which material nonlinearity and geometric nonlinearity were accounted, to investigate the deform behaviors of solid armature. The results show that the dynamic mechanical process of armature is dependent on the armature geometry, material and exciting electric current. By the numerical simulation, the understanding of the fracture mechanism of solid armature was deepened.http://www.sciencedirect.com/science/article/pii/S2214914719303290Electromagnetic railgunSolid armatureFractureExplicit finite elementNumerical simulation |
| spellingShingle | Qing-hua Lin Bao-ming Li Numerical simulation of dynamic large deformation and fracture damage for solid armature in electromagnetic railgun Defence Technology Electromagnetic railgun Solid armature Fracture Explicit finite element Numerical simulation |
| title | Numerical simulation of dynamic large deformation and fracture damage for solid armature in electromagnetic railgun |
| title_full | Numerical simulation of dynamic large deformation and fracture damage for solid armature in electromagnetic railgun |
| title_fullStr | Numerical simulation of dynamic large deformation and fracture damage for solid armature in electromagnetic railgun |
| title_full_unstemmed | Numerical simulation of dynamic large deformation and fracture damage for solid armature in electromagnetic railgun |
| title_short | Numerical simulation of dynamic large deformation and fracture damage for solid armature in electromagnetic railgun |
| title_sort | numerical simulation of dynamic large deformation and fracture damage for solid armature in electromagnetic railgun |
| topic | Electromagnetic railgun Solid armature Fracture Explicit finite element Numerical simulation |
| url | http://www.sciencedirect.com/science/article/pii/S2214914719303290 |
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