螺栓连接悬臂梁超谐响应特性试验研究

李耀彬; 于化东; 王强龙; 宋阳; 伞晓刚; 刘震宇

doi:10.3788/OPE.20172503.0720

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螺栓连接悬臂梁超谐响应特性试验研究

微纳技术与精密机械 | 更新时间：2020-07-07

- 螺栓连接悬臂梁超谐响应特性试验研究
- Super-harmonic resonance experiment about bolt connected cantilever beam
- 光学精密工程 2017年25卷第3期页码：720-728
- 作者机构：
  
  1.长春理工大学机电工程学院, 吉林长春 130022
  2.中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
- 作者简介：
  
  李耀彬 (1969-), 男, 辽宁锦州人, 研究员, 硕士生导师, 主要从事精密机械设计及检测、光电测量与控制方面的研究。E-mail:liyaobin7025@163.com LI Yao-bin, E-mail:liyaobin7025@163.com
  [ "于化东 (1961-), 男, 吉林松原人, 博士, 教授, 博士生导师, “863”计划专家委员会委员, “973”项目首席专家, 1998年于日本千叶大学获得博士学位, 主要从事精密超精密加工技术、微纳制造与检测技术方面的研究。E-mail:yuhd@cust.edu.cn" ]
- 基金信息：
  
  国家自然科学基金面上项目(51275504);吉林省科技发展基金资助项目(20140519007JH)
- DOI：10.3788/OPE.20172503.0720
  中图分类号： TH113.1
- 收稿日期：2016-11-10，
  
  录用日期：2016-12-8，
  
  纸质出版日期：2017-03-25
- 稿件说明：
移动端阅览
李耀彬, 于化东, 王强龙, 等. 螺栓连接悬臂梁超谐响应特性试验研究[J]. 光学精密工程, 2017,25(3):720-728.

Yao-bin LI, Hua-dong YU, Qiang-long WANG, et al. Super-harmonic resonance experiment about bolt connected cantilever beam[J]. Optics and precision engineering, 2017, 25(3): 720-728.
李耀彬, 于化东, 王强龙, 等. 螺栓连接悬臂梁超谐响应特性试验研究[J]. 光学精密工程, 2017,25(3):720-728. DOI： 10.3788/OPE.20172503.0720.

Yao-bin LI, Hua-dong YU, Qiang-long WANG, et al. Super-harmonic resonance experiment about bolt connected cantilever beam[J]. Optics and precision engineering, 2017, 25(3): 720-728. DOI： 10.3788/OPE.20172503.0720.

摘要

针对光电设备中广泛采用的螺栓连接形式，采用单螺栓连接悬臂梁模型，对螺栓连接引起的结构振动特性的改变进行实验。利用激振器和振动信号采集设备，结合快速傅立叶分析方法指出螺栓连接模型在一定条件下有超谐共振响应现象。模型的谐振频率随着扭矩的增大呈先增大后减小的现象。结构在相同扭矩下，第一阶谐振频率随着激励幅值的增大而减小，结构呈渐软非线性。给定1/2和1/3倍谐振频率下的正弦激励，系统能量随着激励幅值的增大而趋向于固有频率处。结构在低预紧扭矩下，非线性项中二次项对结构响应起主要作用；在较高预紧下，非线性项中三次非线性项对结构响应起主要作用。该实验结果对开展后续连接结构的非线性振动特性的研究有一定的理论和指导意义。

Abstract

A single bolt connection cantilever model is used to analyze the difference of vibrational property due to bolt-joint which is widely used in optoelectronic devices. The phenomenon of super-harmonic resonance due to bolt joint connection is verified using the shaker experiment combined with the signal acquisition equipment. In the case that the torque incerease

the resonance frequency of the model increase first and then decrease. The first resonance frequency decrease when the excitation amplitude decrease and the nonlinear structure characteristic is soft nonlinear. The energy inclined to the natural frequency when the excitation amplitude become large while the system excited under the sinusoidal 1/2 and 1/3 times the resonant frequency. When the system is under low pretension

quadratic nonlinear terms in the structural response plays the major role; while at higher pretension

cubic nonlinear term in nonlinear terms of the structural response plays the major role. The results about research has some theoretical and guidance about subsequent nonlinear vibration characteristic calculation.

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references

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