Vibration response of internal excitation of planetary gears sets

Xu Huachao1,2Sun Wenlei1,Zhou Jianxing1

Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (21) : 265-282.

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PDF(1067 KB)
Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (21) : 265-282.

Vibration response of internal excitation of planetary gears sets

  • Xu Huachao1,2Sun Wenlei1,Zhou Jianxing2
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Abstract

The translation-rotation coupled nonlinear vibration differential equations is built by using gear system dynamic. natural frequencies and vibration shapes of the system were calculated, the distribution rules of natural frequencies and the characteristic of vibration shapes were described. Aim at the relationship of direct proportion between internal excitation of system and speed. Propose a kind of method which makes use of sine excitation frequency sweep to simulate internal excitation and match with vibration differential equations, so under the excitation vibration response coupling dynamic differential equations is deduced. There are an specific mapping relation between excitation and response. To calculate the meshes excitation effects on response. Find internal meshes excitation have a smaller influence on low(1~5)and high(16~18)natural frequencies, but influence of external meshes increases along with natural frequencies and a larger influence on sun gear rotational modes of high natural frequencies. Internal and external meshes have significant influence on planetary gear rotational modes in intermediate natural frequencies(6~15). This article lay a foundation for the design of reduce vibration of planetary gears set.

Key words

planetary gear;vibration response;mesh excitation / natural characteristics

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Xu Huachao1,2Sun Wenlei1,Zhou Jianxing1. Vibration response of internal excitation of planetary gears sets[J]. Journal of Vibration and Shock, 2017, 36(21): 265-282

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