轴向推力滚子激振式振动台设计研究及仿真分析

吴上生;黄泽星;陆振威;周运岐

振动与冲击 ›› 2014, Vol. 33 ›› Issue (2) : 64-68.

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (2) : 64-68.
论文

轴向推力滚子激振式振动台设计研究及仿真分析

  • 吴上生1,黄泽星1,陆振威1,周运岐2
作者信息 +

Design research and simulation on axial thrust roller-exciting vibration table

  • WU Shang-sheng1,HUANG Ze-xing1,LU Zhen-wei1,ZHOU Yun-qi2
Author information +
文章历史 +

摘要

提出一种新型机械振动台,分析其机构组成及工作原理,建立激振元件曲面数学方程。通过所建机构动力学方程,导出弹簧预紧量与临界频率间函数关系;进行振动台三维模型运动仿真试验,分析输出波形的频谱及功率谱,计算其加速度波形失真度;验证弹簧预紧量与临界频率间关系。试验结果表明该振动台的输出波形精度及上限频率高于传统机械振动台,且该激振方法可行、有效。

Abstract

A new type of mechanical vibration table was put forward. Mathematical equations of the vibration elements curved surface were built up by analyzing the structure and the working principle of the mechanical vibration table. Through establishing dynamics equations of the vibration mechanism, functional relationships between the amount of spring preload and critical frequencies were obtained. A 3D model of the vibration table was created and motion simulation experiments were carried out on this basis. Then, the acceleration waveform distortions were obtained by analyzing the frequency spectrums and power spectrums of the output waveforms. Meanwhile, the relationships between the amount of spring preload and critical frequencies were verified. The test results show that the precision of the vibration table output waveforms and the upper limiting frequencies are higher than traditional mechanical vibration tables. Thus this kind of exciting method is proved to be feasible and effective.



关键词

振动台 / 轴向推力 / 滚子激振 / 失真度 / 上限频率

Key words

vibration table / axial thrust / roller-exciting / distortion / upper limiting frequency

引用本文

导出引用
吴上生;黄泽星;陆振威;周运岐. 轴向推力滚子激振式振动台设计研究及仿真分析[J]. 振动与冲击, 2014, 33(2): 64-68
WU Shang-sheng;HUANG Ze-xing;LU Zhen-wei;ZHOU Yun-qi. Design research and simulation on axial thrust roller-exciting vibration table[J]. Journal of Vibration and Shock, 2014, 33(2): 64-68

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