Study on Bending-Torsional Coupling Vibration of Intermediate Axis

Abstract:

In order to find the cause of the cracked intermediate axis in a transmission,the characteristic of the bending vibration，torsional vibration and bending-torsional coupling vibration were studied through the analysis of the nature frequency and modal shape based on prestress.The results show that the fatigue fracture of the axis is mainly due to the resonant torsional frequency and bending-torsional coupling vibration and It is basically demonstrated by experiment.It has been found that the fundamental frequency is increase with the increase in spin axis velocity because of the centrifugal load i.e.prestress.The effets can be accounted for by an adjustment of the stiffness,and the dynamic equations are derived.In the end,it is made the optimized design on the axis,the low inherent frequencies are optimized in order to avoid resonance.The problem of the cracked intermediate axis has been solved.

• Periodical: Applied Mechanics and Materials (Volumes 166-169)
• Pages: 3180-3183
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.166-169.3180
• Online since: May 2012
• Authors: Xue Shi Yao, Chun Long Zheng
• Keywords: Bending-Torsional Coupling Vibration, Fatigue Fracture, Intermediate Axis, Pre-Stress

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