欢迎访问《图学学报》 分享到：
图学学报

图学学报

• 图形学与可视化 • 上一篇    下一篇

两种连接结构动载荷传递特性的MATLAB仿真研究

  

  1. 1. 北京理工大学机械与车辆学院，北京 100081；2. 北京理工大学机电学院，北京 100081
  • 出版日期:2017-12-30 发布日期:2018-01-11

MATLAB Simulation Study on Dynamic Load Transfer Characteristics of Two Kinds of Threaded Connections

  1. 1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China;
    2. School of Electromechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
  • Online:2017-12-30 Published:2018-01-11

PDF (PC)

152

摘要： 研究了两种连接结构在低速冲击过程中的动载荷传递特性。通过MIPS
(muti-directional impact protection system)冲击实验，获得系统的冲击与响应过载信号；基于
MATLAB 对信号进行了时域与功率谱分析，结果表明结构A 的阻尼作用大于结构B，对冲击系
统有一定的减震作用；结构B 的谐振频率明显，共振幅值高，不适用于冲击结构。这种差异性对
连接结构的设计具有指导性的意义。通过MATLAB 函数辨识工具对两种结构的信号传递过程进
行函数辨识；通过适当增大零/极点数的方法对传递函数进行了优化。实验数据检验结果表明，该
优化方法能有效提高传递函数的适配度，对其他结构控制系统的设计具有一定的指导意义。

关键词: MATLAB 仿真, 动载荷传递特性, 螺纹连接, 函数辨识, 冲击

Abstract: The dynamic load transfer characteristics of two typical threaded connections under low
speed impact are studied. Impact test of MIPS (muti-directional impact protection system) was
completed to obtain impact and response signal of the system. The signal was analyzed in time
domain and power spectrum analysis by MATLAB. The result shows that the damping effect of the
structure A is larger than that of the structure B, and has a certain damping effect on the impact system.
The resonance frequency of the structure B is obvious, and the resonance amplitude is high. It is not
applicable to the impact structure. This difference has a guiding significance for the design of the
connection structure. The functions of the signal transfer of the two structures were identified by the
MATLAB function recognition tool. The transfer functions were optimized by appropriately
increasing the number of zero/poles. The optimized functions were tested by experimental data,
which showed that the optimization method can effectively improve the system fitness. The
optimization method is of guiding significance for the design of other structural control systems.

Key words: MATLAB simulation, dynamic load transfer characteristics, thread connection, function
identification, impact