The Influences of Gradual Wears and Bearing Clearance of Gear Transmission on Dynamic Responses

Ruiliang Zhang, Kaida Wang, Yandong Shi, Xiuquan Sun, Fengshou Gu and Tie Wang
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Ruiliang Zhang: The State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044, China
Kaida Wang: School of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Yandong Shi: School of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Xiuquan Sun: Centre for Efficiency and Performance Engineering, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK
Fengshou Gu: Centre for Efficiency and Performance Engineering, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK
Tie Wang: School of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Energies, 2019, vol. 12, issue 24, 1-20

Abstract: Gears are important components of the transmission system. Tooth wear and bearing clearance are significant factors affecting the dynamics of the gear system. In order to reveal the effects of gradual wears and bearing clearance on the gear system dynamics, a six-degrees-of-freedom bending-torsion coupled model of gear-rotor-bearing which considers surface wear, bearing clearance and backlash is established. The Rung-Kutta method is used to solve the nonlinear dynamic system, and the dynamic responses of the system are obtained. The results show that the time-varying mesh stiffness decreases with the tooth surface from the unworn phase to severe wear phase. At the same time, the change of the mesh stiffness in the double-tooth mesh area and single-tooth area are different. Moreover, the amplitude of the X-displacement, Y-displacement and relative gear mesh displacement will be enlarged slightly with the increase of wear depth or bearing clearance. By analyzing variation tendency in the frequency domain, the different order harmonics show the different change characteristic with the variation of the wear phases or bearing clearances. This study provides a theoretical basis for improving the transmission performance and the selection of the bearing clearances in the gear system.

Keywords: wear phases; time-varying mesh stiffness; bearing clearance; tooth surface (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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