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

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Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (9) : 109-115.

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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

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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.

Key words

Anti-resonant / Vibrating manchine / Amplitude stability / Amplitude control

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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