反共振时上质体振幅最小的反共振振动机动力学分析与仿真

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振动与冲击 ›› 2009, Vol. 28 ›› Issue (9) : 109-115.

论文

反共振时上质体振幅最小的反共振振动机动力学分析与仿真

刘劲涛,刘杰,李小号,戴丽,柳洪义

作者信息 +

Dynamic analysis and simulation for anti-resonant vibration machine with smallest upper body’s amplitude when anti-resonant vibration happens

Liu Jintao,Liu Jie,Li Xiaohao,Dai li,Liu Hongyi

Author information +

文章历史 +

摘要

本文针对反共振振动机振幅不稳定的问题，提出了一种能使原点反共振振动机振幅稳定的参数选择方法。这种方法的中心思想是令发生反共振时上质体的振幅最小。在这种情况下，当激振频率发生变化时，上下质体振幅的变化是一致的。同时使两共振点之间的距离要离得足够远，在反共振点附近上下质体的幅频响应曲线比较平缓。从而使振幅稳定性基本上达到实用要求。在需要振幅精度比较高的场合，也只需小范围调节即可实现。

Abstract

For the problem of the amplitude instability of anti-resonant vibration machine, a kind of method choosing parameters which let the amplitude of driving-point anti-resonant vibration machine stable is put forword. The central idea of this method is to let the upper body’s amplitude smallest when anti-resonant vibration happens. Under this situation, when the excited frequency varies, the amplitudes of the machine’s upper body and lower body vary synchronologically. At the same time, the distance of the two resonant points should be large enough, then near the anti-resonant point the amplitude-frenquency response curve of the upper body and lower body will be flat. Therefore, the stability of the amplitude can achieve functional using requirements. For the occasions in need of high amplitude accuracy, small scale adjustment can bring out.

导出引用

刘劲涛;刘杰;李小号;戴丽;柳洪义. 反共振时上质体振幅最小的反共振振动机动力学分析与仿真[J]. 振动与冲击, 2009, 28(9): 109-115

Liu Jintao;Liu Jie;Li Xiaohao;Dai li;Liu Hongyi. Dynamic analysis and simulation for anti-resonant vibration machine with smallest upper body’s amplitude when anti-resonant vibration happens[J]. Journal of Vibration and Shock, 2009, 28(9): 109-115

中图分类号： TD156