Title of Paper:Bending Vibration Suppression of a Flexible Multispan Shaft Using Smart Spring Support

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Affiliation of Author(s):机电学院

Journal:SHOCK AND VIBRATION

Key Words:PIEZOELECTRIC ACTUATORS

Abstract:Because the flexible multispan shaft in large machines often rotates at supercritical speed, it is desirable to find ways to suppress the resulting bending vibration. In this paper, a novel type of support structure is proposed and investigated, which can suppress the bending vibration using dry friction. This approach is called Smart Spring support (SMSS). A dynamic model for the multispan shaft with SMSS is developed. The relationship between the vibration suppression effect and the control parameters of the SMSS is obtained through a numerical example involving a helicopter tail drive shaft. A structure of the SMSS is designed and examined with a rotor test. The results demonstrate that the SMSS has a significant effect on bending vibration suppression of flexible multispan shafts. The vibration-reduction ratio of the peak amplitude reaches 57.2% in the numerical example and 45.2% in the rotor test.

ISSN No.:1070-9622

Translation or Not:no

Date of Publication:2017-01-01

Co-author:Peng, Bo,lmm,Tang, Ziyang

Correspondence Author:zrp