Simulation of Particle Damping under Centrifugal Loads

Authors: Riaz A. Bhatti, Wang Yanrong

Abstract:

Particle damping is a technique to reduce the structural vibrations by means of placing small metallic particles inside a cavity that is attached to the structure at location of high vibration amplitudes. In this paper, we have presented an analytical model to simulate the particle damping of two dimensional transient vibrations in structure operating under high centrifugal loads. The simulation results show that this technique remains effective as long as the ratio of the dynamic acceleration of the structure to the applied centrifugal load is more than 0.1. Particle damping increases with the increase of particle to structure mass ratio. However, unlike to the case of particle damping in the absence of centrifugal loads where the damping efficiency strongly depends upon the size of the cavity, here this dependence becomes very weak. Despite the simplicity of the model, the simulation results are considerably in good agreement with the very scarce experimental data available in the literature for particle damping under centrifugal loads.

Keywords: Impact damping, particle damping, vibration control, vibration suppression.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1085872

References:

[1] J. J. Moore and A. B. Pallazzolo, "A forced response analysis and application of impact damper to Rotordynamic Vibration Suppression in a Cryogenic Environment", Journal of Vibration and Acoustics, vol. 117, 1995.
[2] E. M. Flint, "Experimental measurement of the particle damping effectiveness under centrifugal loads" Proc. of 4th National Turbine Engine High Cycle Fatigue Conference HCF'99, 1999
[3] E. M. Flint, E Ruhl and S. E. Olson, "Experimental centrifuge testing and analytical studies of particle damping behavior", CSA Engineering, Inc, Report number A124674, 2000.
[4] M. Brach, "Mechanical Impact Dynamics, Rigid body collisions", Chapters 2-6, John Wiley, 1991.
[5] R. D. Friend and V. K Kinra, "Particle Impact Damping", Journal of Sound and Vibration, 233(1), pp 93-118, 2000.
[6] R. A. Bhatti, Y. R. Wang and Z. C. Wang, " Particle impact damping in two dimensions", Journal of Key Engineering Materials, Damage Assessment of Structure VIII, vol. 413-414, pp. 415-422, 2009.
[7] R. A. Bhatti and Y. Wang, " Damping performance of a particle damper in two dimensions", ASME 2009 Design Engineering and Technical Conference & Computer and Information in Engineering Conference, paper number DETC2009-86862, 2009, To be published.
[8] K. Mao, M. Y. Wang, Z. Xu and T. Chen, "Simulation and Characterization of Particle Damping in Transient Vibrations", Journal of Vibration and Acoustics, vol. 126, pp 202-211, 2004.
[9] M. R. Duncan, C. R. Wassgren and C. M. Krousgrill, "The damping performance of a single particle impact damper", Journal of Sound and Vibration, vol. 286, pp. 123-144, 2005.
[10] V. K Kinra, K. S. Marhadi and B. L. Witt, "Particle impact damping of transient vibration", 46th AIAA Structural Dynamics & Material conference, Paper no. AIAA 2005-2324, 2005.
[11] M. Saeki, "Analytical study of multi-particle damping", Journal of Sound and Vibration, 281, pp. 1133-1144, 2005.
[12] B. L. Witt and V. K. Kinra, "Particle impact damping in the horizontal plane", 47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, paper no. AIAA 2006-2209, 2006.