Numerical simulation and experimental study on the characteristics of armature wear and contact process of small caliber railgun
During the electromagnetic railgun launch process, high temperature and high current conditions can lead to armature wear, affecting armature/rail contact and degrading launch performance. This paper starts with the analysis of the metal liquid film formation at the armature/rail contact interface....
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2025-07-01
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| Series: | Defence Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914725000996 |
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| author | Huayi Zhang Benfeng Gu Baoming Li Chunxia Yang |
| author_facet | Huayi Zhang Benfeng Gu Baoming Li Chunxia Yang |
| author_sort | Huayi Zhang |
| collection | DOAJ |
| description | During the electromagnetic railgun launch process, high temperature and high current conditions can lead to armature wear, affecting armature/rail contact and degrading launch performance. This paper starts with the analysis of the metal liquid film formation at the armature/rail contact interface. 1D and 3D models are developed based on the characteristic relational equation obtained from the melt liquid film model. These models incorporate thermodynamic equilibrium phase diagram, transient heat and mass transfer model, copper-aluminum alloy reaction model, nonlinear electrical conductivity relational equation and nonlinear thermal conductivity relational equation to analyze the temperature distribution and copper-aluminum intermetallic compounds (Cu-Al IMCs) formation in the melt liquid film. The wear mechanism and influence law of armature are explained in detail from different perspectives to understand and predict the transition and gouging phenomena at the contact interface. The model's validity is confirmed by the results of electromagnetic launch experiments, providing insights for future structure design and material selection of the armature and rail. |
| format | Article |
| id | doaj-art-48ff2a110a874bb49035bf6d2999ddcb |
| institution | Kabale University |
| issn | 2214-9147 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj-art-48ff2a110a874bb49035bf6d2999ddcb2025-08-20T03:24:30ZengKeAi Communications Co., Ltd.Defence Technology2214-91472025-07-014918019110.1016/j.dt.2025.03.015Numerical simulation and experimental study on the characteristics of armature wear and contact process of small caliber railgunHuayi Zhang0Benfeng Gu1Baoming Li2Chunxia Yang3National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing, 210094, ChinaNational Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing, 210094, ChinaCorresponding author.; National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing, 210094, ChinaCorresponding author.; National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing, 210094, ChinaDuring the electromagnetic railgun launch process, high temperature and high current conditions can lead to armature wear, affecting armature/rail contact and degrading launch performance. This paper starts with the analysis of the metal liquid film formation at the armature/rail contact interface. 1D and 3D models are developed based on the characteristic relational equation obtained from the melt liquid film model. These models incorporate thermodynamic equilibrium phase diagram, transient heat and mass transfer model, copper-aluminum alloy reaction model, nonlinear electrical conductivity relational equation and nonlinear thermal conductivity relational equation to analyze the temperature distribution and copper-aluminum intermetallic compounds (Cu-Al IMCs) formation in the melt liquid film. The wear mechanism and influence law of armature are explained in detail from different perspectives to understand and predict the transition and gouging phenomena at the contact interface. The model's validity is confirmed by the results of electromagnetic launch experiments, providing insights for future structure design and material selection of the armature and rail.http://www.sciencedirect.com/science/article/pii/S2214914725000996Electromagnetic launchArmature/rail contact interfaceMetal liquid filmArmature wearTransitionGouging |
| spellingShingle | Huayi Zhang Benfeng Gu Baoming Li Chunxia Yang Numerical simulation and experimental study on the characteristics of armature wear and contact process of small caliber railgun Defence Technology Electromagnetic launch Armature/rail contact interface Metal liquid film Armature wear Transition Gouging |
| title | Numerical simulation and experimental study on the characteristics of armature wear and contact process of small caliber railgun |
| title_full | Numerical simulation and experimental study on the characteristics of armature wear and contact process of small caliber railgun |
| title_fullStr | Numerical simulation and experimental study on the characteristics of armature wear and contact process of small caliber railgun |
| title_full_unstemmed | Numerical simulation and experimental study on the characteristics of armature wear and contact process of small caliber railgun |
| title_short | Numerical simulation and experimental study on the characteristics of armature wear and contact process of small caliber railgun |
| title_sort | numerical simulation and experimental study on the characteristics of armature wear and contact process of small caliber railgun |
| topic | Electromagnetic launch Armature/rail contact interface Metal liquid film Armature wear Transition Gouging |
| url | http://www.sciencedirect.com/science/article/pii/S2214914725000996 |
| work_keys_str_mv | AT huayizhang numericalsimulationandexperimentalstudyonthecharacteristicsofarmaturewearandcontactprocessofsmallcaliberrailgun AT benfenggu numericalsimulationandexperimentalstudyonthecharacteristicsofarmaturewearandcontactprocessofsmallcaliberrailgun AT baomingli numericalsimulationandexperimentalstudyonthecharacteristicsofarmaturewearandcontactprocessofsmallcaliberrailgun AT chunxiayang numericalsimulationandexperimentalstudyonthecharacteristicsofarmaturewearandcontactprocessofsmallcaliberrailgun |