Study on failure characteristics of gearbox transmission system with coupling faults

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (12) : 208-214.

WANG Xin 1,2 XU Yu-xiu 1,2 WU Bao-lin 1

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Abstract

In order to identify theunknown components in the experimental signals of the gear transmission system, dimensionless dynamical equations of gear transmission system which contains a two-stage fixed-axis gear with crack fault and a one-stage planetary gear with chipping fault were established. Contrasted bifurcation characteristics of system in normal condition and coupling faults condition, and the change of Poincaré section andfrequency spectrum under different excitation frequencies. Analyze thefailure frequency characteristics caused by the coupling faults. Simulation analysis shows that the planetary fault is sensitive to high speed, the fixed-axis gear fault is sensitive to low speed, and the coupling of both makes the frequency peaks appear in the vibration frequency of fixed axis gear. The characteristics and contributions of the failure frequency of two faults are different in different excitation frequencies. The simulation results find the cause of the unknown peak and the failure frequency of the experimental signals.

Key words

Planetary gear transmission / Nonlinear dynamical / Coupling faults / Failure characteristics

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WANG Xin 1,2 XU Yu-xiu 1,2 WU Bao-lin 1. Study on failure characteristics of gearbox transmission system with coupling faults[J]. Journal of Vibration and Shock, 2017, 36(12): 208-214

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