Simulation Optimization of Body Tube Fastening of Electromagnetic Rail Based on Modal Analysis
In order to further improve the vibration reduction optimization effect of the electromagnetic rail transmitter body tube fastening, the modal analysis method is used to simulate the selection scheme of fastening point. On the basis of simplifying the electromagnetic orbit emitter into Bernoulli-Eul...
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| Formato: | article |
| Lenguaje: | ZH |
| Publicado: |
Editorial Office of Aero Weaponry
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/09b1575a9a974262b1c3810f1120234e |
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| Sumario: | In order to further improve the vibration reduction optimization effect of the electromagnetic rail transmitter body tube fastening, the modal analysis method is used to simulate the selection scheme of fastening point. On the basis of simplifying the electromagnetic orbit emitter into Bernoulli-Euler beam, the vibration response analysis and modal analysis are carried out, and the whole process of emission is simulated by establishing the finite element model of the transmitter. According to the system stiffness of critical velocity, the optimal fastening position is determined and the evaluation index is put forward to evaluate the optimization effect. The simulation results show that the addition of fastening can effectively improve the stiffness of the transmitter, and the vibration absorption effect of the fastening is affected by the vibration characteristics of the fastening position, and the selection of the fastening position should avoid the resonance range of the critical velocity as far as possible, and the position is located before the arrival position of the critical speed on the premise of meeting the requirements, the addition of fastening leads to the stress concentration in the adjacent parts of the rail to improve the rail strength. |
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