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The enhanced electromagnetic railgun is a novel launching system whose structural dynamic characteristics directly influence device lifespan and precision. This paper investigates its modal characteristics and the influence of structural parameters. Dynamic differential equations were used to establish relationships between modal properties and structural stiffness, mass, and damping. Experimental measurements using multi-point triaxial acceleration sensors captured the first six natural frequencies and mode shapes. A finite element model (FEM) was established and validated. Based on the validated model, the effects of the number of fastening devices, winding layer thickness, and rail material on modal properties were analyzed.

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Research on Modal Analysis and Variation Patterns of Enhanced Electromagnetic Drive Devices

  • 会议论文

  • 发表日期：

    2026年

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  • Yishuang Shi,
  • Zhicheng Tan,
  • Kaiwen Xue,
  • Wenping Cheng,
  • Ying Zhao,
  • Rong Xu,
  • Weidong Xu,
  • Ping Yan

摘要

The enhanced electromagnetic railgun is a novel launching system whose structural dynamic characteristics directly influence device lifespan and precision. This paper investigates its modal characteristics and the influence of structural parameters. Dynamic differential equations were used to establish relationships between modal properties and structural stiffness, mass, and damping. Experimental measurements using multi-point triaxial acceleration sensors captured the first six natural frequencies and mode shapes. A finite element model (FEM) was established and validated. Based on the validated model, the effects of the number of fastening devices, winding layer thickness, and rail material on modal properties were analyzed.