Synchronization behaviors and vibration synchronization transmission of the dual-vibratory-rotor system under superresonant conditions

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (12) : 44-52.

CHEN Bang1, XIA Xiaoou1, WANG Xiaobo2

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Abstract

In order to reveal the synchronization characteristics of the system with two rotors mounted on two coupled bodies, a simplified physical model of the dual-vibratory-rotor system was proposed.The coupling mechanism between two rotors was analyzed by the integral method and the Lyapunov principle.The synchronization condition, stability of the system, and vibration synchronization transmission condition were summarized.Taking the maximum vibration torque as the breakthrough point, the influence of the coupling spring stiffness on the synchronous performance was investigated.By introducing the concept of system characteristic frequency, the strong coupling mechanism of the system was expounded.Theoretical research shows that as the coupling frequency is close to the coupling characteristic frequency, the vibration torque is large and coupling performance can be strong.When coupling effects between rotors are weak, self-synchronization can be obtained by adjusting the coupling spring.Synchronization characteristics of the system can be the theoretical basis for designing high-stability and high-tolerance vibration systems.Vibrations of the dual-vibratory-rotor system with different parameters were simulated respectively, and the results are in good agreement with the theoretical analysis.

Key words

vibratory rotor / exciter / synchronization / simulation / vibration synchronization transmission

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CHEN Bang1, XIA Xiaoou1, WANG Xiaobo2. Synchronization behaviors and vibration synchronization transmission of the dual-vibratory-rotor system under superresonant conditions[J]. Journal of Vibration and Shock, 2019, 38(12): 44-52

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