Dynamic Response and Parameter Analysis of Electromagnetic Railguns under Time Varying Moving Loads
During the launch process of an electromagnetic railgun, the armature is subjected to the ampere force and moves along the rail with variable acceleration. In this period, the rail is excited by time varying moving loads and generates lateral vibration. For analysis, the rail is simplified as an Eul...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Hindawi Limited
2023-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2023/4351878 |
| _version_ | 1797375184229892096 |
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| author | Lilan Liu Xukai Zhang Jiayi Wang |
| author_facet | Lilan Liu Xukai Zhang Jiayi Wang |
| author_sort | Lilan Liu |
| collection | DOAJ |
| description | During the launch process of an electromagnetic railgun, the armature is subjected to the ampere force and moves along the rail with variable acceleration. In this period, the rail is excited by time varying moving loads and generates lateral vibration. For analysis, the rail is simplified as an Euler–Bernoulli beam, and the nonlinear dynamic equation of the beam under time varying moving loads is established. The electromagnetic repulsive force between rails, the contact pressure between the armature and the rail, and the thermal expansion pressure acting on the rail are taken into account. The lateral vibration response of the rail is achieved by using the analytical method combined with numerical integration. The variable motion of the armature during launch is also illustrated. Furthermore, the study of the effects of structure parameters on the vibration amplitude of the rail is performed. The research results can provide a theoretical basis for the structural optimization and vibration reduction of electromagnetic railguns. |
| first_indexed | 2024-03-08T19:18:35Z |
| format | Article |
| id | doaj.art-774071bc2f3945ef85639faaf88fe37e |
| institution | Directory Open Access Journal |
| issn | 1875-9203 |
| language | English |
| last_indexed | 2024-03-08T19:18:35Z |
| publishDate | 2023-01-01 |
| publisher | Hindawi Limited |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj.art-774071bc2f3945ef85639faaf88fe37e2023-12-27T00:00:11ZengHindawi LimitedShock and Vibration1875-92032023-01-01202310.1155/2023/4351878Dynamic Response and Parameter Analysis of Electromagnetic Railguns under Time Varying Moving LoadsLilan Liu0Xukai Zhang1Jiayi Wang2Xi’an University of TechnologyYangling Vocational and Technical CollegeXi’an University of TechnologyDuring the launch process of an electromagnetic railgun, the armature is subjected to the ampere force and moves along the rail with variable acceleration. In this period, the rail is excited by time varying moving loads and generates lateral vibration. For analysis, the rail is simplified as an Euler–Bernoulli beam, and the nonlinear dynamic equation of the beam under time varying moving loads is established. The electromagnetic repulsive force between rails, the contact pressure between the armature and the rail, and the thermal expansion pressure acting on the rail are taken into account. The lateral vibration response of the rail is achieved by using the analytical method combined with numerical integration. The variable motion of the armature during launch is also illustrated. Furthermore, the study of the effects of structure parameters on the vibration amplitude of the rail is performed. The research results can provide a theoretical basis for the structural optimization and vibration reduction of electromagnetic railguns.http://dx.doi.org/10.1155/2023/4351878 |
| spellingShingle | Lilan Liu Xukai Zhang Jiayi Wang Dynamic Response and Parameter Analysis of Electromagnetic Railguns under Time Varying Moving Loads Shock and Vibration |
| title | Dynamic Response and Parameter Analysis of Electromagnetic Railguns under Time Varying Moving Loads |
| title_full | Dynamic Response and Parameter Analysis of Electromagnetic Railguns under Time Varying Moving Loads |
| title_fullStr | Dynamic Response and Parameter Analysis of Electromagnetic Railguns under Time Varying Moving Loads |
| title_full_unstemmed | Dynamic Response and Parameter Analysis of Electromagnetic Railguns under Time Varying Moving Loads |
| title_short | Dynamic Response and Parameter Analysis of Electromagnetic Railguns under Time Varying Moving Loads |
| title_sort | dynamic response and parameter analysis of electromagnetic railguns under time varying moving loads |
| url | http://dx.doi.org/10.1155/2023/4351878 |
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