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Study on synchronization characteristics for self-synchronous vibration system with dual-frequency and dual-motor excitation

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Abstract

In petroleum drilling engineering, drilling shakers are critical devices for cleansing solid particles and recycling drilling fluid. For the problem that the vibration screen with a single frequency usually results in flurry overflow due to the blocking of screen mesh, a selfsynchronous vibratory system with dual-frequency and dual-motor excitation is proposed. But it is not clear about the synchronization mechanism and dynamic characteristics of the system, which causes a lack of theoretical description for the source of synchronization phenomenon. Hence, this paper explores the synchronization mechanism and dynamic characteristics around the proposed system above. First, vibration and stability theory are employed to master the dynamic characteristics of the system, and the dynamic model is established by Lagrange equation. Then, displacement responses of the system are obtained by dimensionless formulas. Synchronous condition and synchronous stability between the unbalanced rotors are derived with small parameter method and Poincare method. Finally, some computer simulations are implemented to further verify the correctness of the theoretical analysis. The research result shows that the synchronous ability between the two unbalanced rotors actuated by dual-frequency excitation is related to the distance from the rotating center of the motor to the centroid of supporting body, and the greater the distance value, the better the synchronization of the vibrating system. This study will promote the recycle technology development of drilling fluid and settlement of the common scientific issues in vibrating synchronization.

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Authors and Affiliations

  1. School of Mechanical Engineering, Southwest Petroleum University, Chengdu, 610500, China

    Min Zou, Pan Fang, Huan Peng, Duyu Hou, Mingjun Du & Yongjun Hou

Authors
  1. Min Zou
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  2. Pan Fang
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  3. Huan Peng
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  4. Duyu Hou
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  5. Mingjun Du
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  6. Yongjun Hou
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Corresponding author

Correspondence to Pan Fang.

Additional information

Recommended by Associate Editor Junhong Park

Min Zou received the B.E. from Sichuan University Jinjiang College, China, in 2016. He is currently pursuing the M.E. at Southwest Petroleum University, China. His research interests include dynamics of mechanical systems and nonlinear systems, and dynamics of synchronization systems.

Pan Fang completed his Ph.D. in Mechanical Engineering from Southwest Petroleum University, China, in 2016. Presently he is a Master Tutor at Southwest Petroleum University, China. His research interests include dynamics of multi-body systems and vibration control.

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Zou, M., Fang, P., Peng, H. et al. Study on synchronization characteristics for self-synchronous vibration system with dual-frequency and dual-motor excitation. J Mech Sci Technol 33, 1065–1078 (2019). https://doi.org/10.1007/s12206-019-0206-4

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  • DOI: https://doi.org/10.1007/s12206-019-0206-4

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