One-Dimensional Bi-Stage Phononic Band Gap Shaft Structure for Reducing Torsional Vibration

Abstract:

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In this paper, a one-dimensional bi-stage phononic band gap (PBG) structure based on double local resonant effects is presented to reduce the torsional vibration for the first time. A unit cell of the bi-stage PBG structure is composed of two harmonic LR oscillators in the radial direction, distributed periodically along the shaft. A new method, combining the transfer matrix method and the lumped-mass method is proposed to study the torsional vibration band gaps of the double PBG-like shaft theoretically and proved by the finite element method. The results show that the mid-gap frequency of the bi-stage PBG structure shaft is lower than that in the one-stage PBG shaft and the relative width of the band gaps reaches 1.3 with the average attenuation of the vibration amplitude about 40dB.

Info:

Periodical:

Edited by:

Hun Guo, Taiyong Wang, Zeyu Weng, Weidong Jin, Shaoze Yan, Xuda Qin, Guofeng Wang, Qingjian Liu and Zijing Wang

Pages:

54-58

DOI:

10.4028/www.scientific.net/AMM.141.54

Citation:

L. X. Li et al., "One-Dimensional Bi-Stage Phononic Band Gap Shaft Structure for Reducing Torsional Vibration", Applied Mechanics and Materials, Vol. 141, pp. 54-58, 2012

Online since:

November 2011

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Price:

$35.00

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