Influence of Engaging Clearance on Gear System Dynamic Characteristics

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (14) : 215-221.

LIU Yan-wei 1 , ZHAO Ke-gang 2

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Abstract

With a kind of gear transmission system with switch control engaging element oriented, the nonlinear characteristics of the gear system with multiple clearances with the front or back engaging clearance and side clearance are studied, with using the dynamic transmission error(DTE) as the response index. Dynamic model with time-varying gear meshing stiffness, side clearance and engaging clearance is developed, the differential equations of side clearance, side&front clearances, and side&rear clearances physical configurations are solved by the fourth-order Runge-Kutta algorithm, and the impact of clearance configuration on DTE is studied, with different driver-load inertia ratio and differ torque separately. The results indicate that: the gear system enters into chaotic motion state with each clearance configuration, the existence of the gear-front or gear-rear clearance changes primary dynamic characteristics obviously, such as jump frequency, overlap band of primary resonance and chaos degree. In general, response amplitude decreases, but fluctuations increase for multi-clearance gear system. When the inertia of the load is greater than the driver, the response amplitude and the fluctuations of the gear-front multi-clearance gear system are obviously greater than the gear-rear multi-clearance gear system, this indicates that the vibration of the system is larger when the engaging clearance is far away from the larger inertia end.

Key words

Gear / Clearance / Dynamic response / DTE

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LIU Yan-wei 1,ZHAO Ke-gang 2. Influence of Engaging Clearance on Gear System Dynamic Characteristics[J]. Journal of Vibration and Shock, 2016, 35(14): 215-221

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