Research on Unintentional Unscrewing of Screw Joints Under Vibration Condition

Zhao Dengfeng;Ceng Guoying

Journal of Vibration and Shock ›› 2010, Vol. 29 ›› Issue (10) : 175-178.

PDF(1230 KB)
PDF(1230 KB)
Journal of Vibration and Shock ›› 2010, Vol. 29 ›› Issue (10) : 175-178.
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Research on Unintentional Unscrewing of Screw Joints Under Vibration Condition

  • Zhao Dengfeng;Ceng Guoying
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Abstract

By numerical simulation and experimental, the dynamic response characteristics of unintentional unscrewing of threaded connection under vibration condition was researched. Features values of joints failure early-warning was found out. Firstly, qualitative analysis of the unintentional unscrewing process was preceded. Subsequently, a simplified dynamic model of the screw joint was built and verified. Finally, by analysis of experimental data, the THD was put forward as a better early-warning indicator. The results showed that the THD was a better early-warning indicator whether sinusoidal excitation or frequency bandlimited random excitation

Key words

Screw Joint / Total Harmonic Distortion

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Zhao Dengfeng;Ceng Guoying. Research on Unintentional Unscrewing of Screw Joints Under Vibration Condition[J]. Journal of Vibration and Shock, 2010, 29(10): 175-178
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