Journal of Shanghai Jiao Tong University

Journal of Shanghai Jiaotong University >

2025 , Vol. 59 >Issue 8: 1192 - 1202

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2024.272

Mechanical Engineering

Damping Characteristics of Fe-Mn Alloy and Its Helical Spring

  • TU Tiangang ,
  • YANG Weitao ,
  • YANG Qi ,
  • XU Bin
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  • 1. China Academy of Machinery Science and Technology, Beijing 100044, China
    2. Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Research Institute of Materials Co., Ltd., Shanghai 200437, China

Received date: 2024-07-08

  Revised date: 2024-09-09

  Accepted date: 2024-10-14

  Online published: 2025-04-28

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Abstract

In order to change the undamped state of traditional helical spring, a helical spring with improved damping characteristics is developed by using Fe-Mn alloy. First, the optimal process parameters for Fe-Mn alloy material in manufacturing helical springs is investigated. Then, Fe-Mn alloy helical springs are fabricated and treated with optimized parameters to achieve high damping properties. Finally, the damping properties of Fe-Mn alloy helical spring are studied through the functional principle and analytical model of the helical spring. The results show that the Fe-Mn alloy helical spring exhibits a significant energy dissipation effect compared with the 65Mn helical spring under identical external excitation conditions. Within a specific loading displacement range, the loss factor of Fe-Mn alloy helical spring increases exponentially with the increase of displacement, while its equivalent stiffness decreases linearly, exhibiting pronounced softening characteristics. Specifically, when the equivalent strain amplitude of Fe-Mn alloy helical spring is less than 0.3%, its energy dissipation can be predicted using its torsional strain energy, providing a theoretical basis for spring design. This study provides a new direction for the development and application of vibration isolation products.

Key words： Fe-Mn alloy; damping property; Fe-Mn alloy helical spring; energy dissipation characteristics

Cite this article

TU Tiangang , YANG Weitao , YANG Qi , XU Bin . Damping Characteristics of Fe-Mn Alloy and Its Helical Spring[J]. Journal of Shanghai Jiaotong University, 2025 , 59(8) : 1192 -1202 . DOI: 10.16183/j.cnki.jsjtu.2024.272

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