东北大学学报(自然科学版) ›› 2024, Vol. 45 ›› Issue (10): 1425-1434.DOI: 10.12068/j.issn.1005-3026.2024.10.008

• 机械工程 • 上一篇    

新型细长支杆振动抑制方法

贾如玉, 姚红良(), 陈亚强, 唐陈伟   

  1. 东北大学 机械工程与自动化学院,辽宁 沈阳 110819
  • 收稿日期:2023-05-19 出版日期:2024-10-31 发布日期:2024-12-31
  • 通讯作者: 姚红良
  • 作者简介:贾如玉(1998-),女,河北张家口人,东北大学硕士研究生
    姚红良(1979-),男,河北保定人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(52075084)

Method for Vibration Suppressing of New Type of Slender Support Rods

Ru-yu JIA, Hong-liang YAO(), Ya-qiang CHEN, Chen-wei TANG   

  1. School of Mechanical Engineering & Automation,Northeastern University,Shenyang 110819,China. cn
  • Received:2023-05-19 Online:2024-10-31 Published:2024-12-31
  • Contact: Hong-liang YAO
  • About author:YAO Hong-liang,E-mail:hlyao@mail.neu.edu.cn

摘要:

基于点阵结构比刚度高、轻质量和设计性强等优点,提出在点阵结构内部填充黏弹性阻尼材料,设计了新型细长支杆-阻尼填充点阵支杆,该结构在具有足够承载能力的基础上拥有较高的阻尼性能.利用有限元方法对点阵支杆和阻尼填充支杆进行动力学分析,并通过响应面方法建立了一阶共振频率对应的动刚度峰值的响应面近似模型,分析了结构参数对动力学特性的影响,使用遗传算法对动刚度峰值进行了优化,确定了在给定结构参数范围内减振性能最好的结构尺寸参数.最后实验证明阻尼填充点阵支杆的加速度响应幅值降低了57.14%,验证其优越的减振性能.

关键词: 细长支杆, 振动抑制, 点阵结构, 黏弹性阻尼材料, 参数优化

Abstract:

Based on the advantages of high specific stiffness, light weight and designability of the lattice structure, a new type of slender support rod with the lattice structure filled with viscoelastic damping material was proposed, which enables the structure have strong damping performance on the basis of sufficient load?bearing capacity. The finite element method was used to analyze the dynamics of the lattice support rod and damping filled lattice support rod, and a response surface approximate model of dynamic stiffness peak corresponding to the first?order resonance frequency was established by the response surface method. The influence of the structural parameters on the dynamic characteristics was analyzed, and the dynamic stiffness peak was optimized by the genetic algorithm. Finally, the test demonstrated 57.14% reduction in the acceleration response amplitude for the lattic support rod filled with damping, confirming their superior damping performance.

Key words: slender support rod, vibration suppressing, lattice structure, viscoelastic damping material, parameter optimization

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