噪声与振动控制

›› 2011, Vol. 31 ›› Issue (6): 69-71.DOI: 10.3969/j.issn.1006-1355-2011.06.015

• 2.振动理论与数值解法 • 上一篇    下一篇

一种非线性隔振器的静力分析与实验研究

胡光军,周生通,李鸿光   

  1. （ 上海交通大学 机械与动力工程学院 机械系统与振动国家重点实验室， 上海 200240 ）
  • 收稿日期:2011-02-24 修回日期:2011-03-18 出版日期:2011-12-18 发布日期:2011-12-18
  • 通讯作者: 胡光军

Static Analysis and Experiment of a Nonlinear Vibration Isolator

HU Guang-jun,ZHOU Sheng-tong,LI Hong-guang   

  1. （ State Key Laboratory of Mechanical System and Vibration, Shanghai Jiaotong University, Shanghai 200240， China ）
  • Received:2011-02-24 Revised:2011-03-18 Online:2011-12-18 Published:2011-12-18
  • Contact: HU Guang-jun

摘要： 研究一种变刚度非线性隔振器，使该隔振器具有高静刚度低刚度的效果。根据水平铰支梁受水平力弯曲理论、刚度并联理论，分析斜薄壁梁在竖直方向力的作用下的力位移以及刚度位移特性，得到斜薄壁梁结构在竖直力作用下具有负刚度特性。通过与弹簧（正刚度）结构并联，理论结合实验验证一种并联结构隔振器样机，得到该样机具有高静刚度－小静变形，低动刚度－力的变化率很小。

关键词: 振动与波, 高静低动, 负刚度, 薄壁梁, 隔振器

Abstract: The stiffness characteristic of a nonlinear vibration isolator is studied. Based on buckling theory, the force-displacement and stiffness-displacement relationships of an oblique thin-walled beam are analyzed, and the existence of negative stiffness is discussed. A prototype of the nonlinear vibration isolator is proposed. Its high-static and low-dynamic (HSLD) stiffness characteristics are validated by mutual comparison of the theoretical and experimental results.

Key words: vibration and wave, HSLDS, negative stiffness, thin beam, vibration isolator

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