LINEAR MULTIMODAL MODEL FOR A PRESSURIZED GAS BLADDER STYLE HYDRAULIC NOISE SUPPRESSOR

Authors

  • Kenneth A. Marek G. W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 771 Ferst Dr., Atlanta, GA 30332, USA
  • Elliott R. Gruber G. W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 771 Ferst Dr., Atlanta, GA 30332, USA
  • Kenneth A. Cunefare G. W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 771 Ferst Dr., Atlanta, GA 30332, USA

Keywords:

hydraulic, silencer, suppressor, model

Abstract

Pressurized bladder style in-line hydraulic noise suppressors are commonly used in industry for broadband pressure ripple reduction, but predictive models for these suppressors are not available in the literature. To address this shortcoming, a linear acoustic model is developed for a commercially available suppressor, in which the acoustic field is analyzed through expansion into multiple radial modes. Bladder mass, perforate layer impedance, and inlet/outlet extensions are included in the model, and transmission loss predictions are validated against experimental data. The presented theoretical model has been shown to correspond well to experimental data at frequencies below about 1300 to 2300 Hz, depending on system and precharge pressures. In addition, simulations show that small variations in bladder precharge temperature or rubber bladder mass do not significantly affect transmission loss. While inclusion of the perforate layer significantly affects modeling results, it is observed that better perforate layer models or experimental data are needed for accurate system modeling.

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Author Biographies

Kenneth A. Marek, G. W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 771 Ferst Dr., Atlanta, GA 30332, USA

Kenneth Marek has a BSME degree from Texas Tech University and is currently a Ph.D. candidate in Mechanical Engineering at the Georgia Institute of Technology. His research focuses on modeling and simulation of noise control technologies for fluid power.

Elliott R. Gruber, G. W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 771 Ferst Dr., Atlanta, GA 30332, USA

Elliott Gruber earned a BSME degree from the Georgia Institute of Technology in 2007. He is currently pursuing a Ph. D. in Mechanical Engineering, also at the Georgia Institute of Technology.

Kenneth A. Cunefare, G. W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 771 Ferst Dr., Atlanta, GA 30332, USA

Dr. Cunefare is a Professor at the Georgia Institute of Technology. He began at Georgia Tech in 1990. Prior he was the F.V. Hunt Postdoctoral Fellow at The Technical University of Berlin. He earned his PhD in 1990 from the Pennsylvania State University. He is currently Professor in Charge of the Integrated Acoustics Laboratory.

References

Arendt, E. 1988. Pulsation absorbing device, USA

Patent No. 4,759,387.

Bies, D. A. and Hansen, C. H. 2009. Engineering

Noise Control: Theory and Practice, Spon Press,

New York, 2009.

Bilawchuk, S. and Fyfe, K. R. 2003. Comparison and

implementation of the various numerical methods

used for calculating transmission loss in silencer

systems. Applied Acoustics, Vol. 64, pp. 903-916.

Cummings, A. and Chang, I.-J. 1988. Sound attenuation

of a finite length dissipative flow duct silencer

with internal mean flow in the absorbent. Journal of

Sound and Vibration, Vol. 127, pp. 1 - 17.

Denia, F. D., Selamet, A., Fuenmayor, F. J. and

Kirby, R. 2007. Acoustic attenuation performance

of perforated dissipative muflers with empty in

outlet extensions. Journal of Sound and Vibration,

Vol. 302, pp. 1000 - 1017.

Dexter, E. 1985. Pulsation dampener and acoustic

attenuator, USA Patent No. 4,497,388.

Dickey, N. S., Selamet, A. and Ciray, M. S. 2001. An

experimental study of the impedance of perforated

plates with grazing flow. Journal of the Acoustical

Society of America, Vol. 110, pp. 2360 - 2370.

Earnhart, N. E. and Cunefare, K. A. 2012. Compact

Helmholtz resonators for hydraulic systems. International

Journal of Fluid Power, Vol. 13, pp. 41 - 50.

Jenski, J., Gary M. and Shiery, J. C. 1998. Noise

suppressor, USA Patent No. 5,735,313.

Johnston, D. N., Longmore, D. K. and Drew, J. E.

A technique for the measurement of the

transfer matrix characteristics of two-port hydraulic

components. Fluid Power Systems and Technology,

Vol. 1, pp. 25 - 33.

Kirby, R. 2001. Simplified techniques for predicting

the transmission loss of a circular dissipative silencer.

Journal of Sound and Vibration, Vol. 243,

pp. 403 - 426.

Kirby, R. and Cummings, A. 1998. The impedance of

perforated plates subjected to grazing gas flow and

backed by porous media. Journal of Sound and Vibration,

Vol. 217, pp. 619 - 636.

Kirby, R. and Denia, F. D. 2007. Analytic mode matching

for a circular dissipative silencer containing mean

flow and a perforated pipe. Journal of the Acoustical

Society of America, Vol. 122, pp. 3471 - 3482.

Lee, I., Selamet, A. and Huff, N. T. 2006. Acoustic

impedance of perforations in contact with fibrous

material. Journal of the Acoustical Society of America,

Vol. 119, pp. 2785 - 2797.

Lee, I., Selamet, A. and Huff, N. T. 2006. Impact of

perforation impedance on the transmission loss of

reactive and dissipative silencers. Journal of the

Acoustical Society of America, Vol. 120, pp. 3706 -

Morse, P. M. and Ingard, K. U. 1968. Theoretical

Acoustics, McGraw-Hill, Inc., New York, 1968.

Nennig, B., Perrey-Debain, E. and Ben Tahar, M.

A mode matching method for modeling dissipative

silencers lined with poroelastic materials

and containing mean flow. Journal of the Acoustical

Society of America, Vol. 128, pp. 3308 - 3320.

Panigrahi, S. N. and Munjal, M. L. 2005. Comparison

of various methods for analyzing lined circular

ducts. Journal of Sound and Vibration, Vol. 285,

pp. 905 - 923.

Peat, K. S. 1991. A transfer matrix for an absorption

silencer element. Journal of Sound and Vibration,

Vol. 146, pp. 353 - 360.

Rabie, M. G. 2007. On the application of oleopneumatic

accumulators for the protection of hydraulic

transmission lines against water hammer - a

theoretical study. International Journal of Fluid

Power, Vol. 8, pp. 39 - 49.

Selamet, A. and Ji, Z. L. 1999. Acoustic attenuation

performance of circular expansion chambers with

extended inlet/outlet. Journal of Sound and Vibration,

Vol. 223, pp. 197 - 212.

Selamet, A., Xu, M. B., Lee, I. - J. and Huff, N. T.

Analytical approach for sound attenuation in

perforated dissipative silencers. Journal of the

Acoustical Society of America, Vol. 115, pp. 2091 -

Selamet, A., Xu, M. B., Lee, I. - J. and Huff, N. T.

Analytical approach for sound attenuation in

perforated dissipative silencers with inlet/outlet extensions.

Journal of the Acoustical Society of America,

Vol. 117, pp. 2078 - 2089.

Shiery, J. C. 1998. Noise suppressor, USA Patent No.

,732,741.

International Organization for Standardization, 2000.

ISO 15086-2, Hydraulic fluid power - Determination

of fluid-borne noise characteristics of components

and systems - Part 2: Measurement of speed

of sound in a fluid in a pipe.

Sullivan, J. W. and Crocker, M. J. 1978. Analysis of

concentric-tube resonators having unpartitioned

cavities. Journal of the Acoustical Society of America,

Vol. 64, pp. 207 - 215.

Wilkes, R. Year. Noise Reduction in Hydraulic Systems,

Inter-Noise 95, Vol. Newport Beach, CA,

USA, pp. 93 - 96.

Xu, M. B., Selamet, A., Lee, I. - J. and Huff, N. T.

Sound attenuation in dissipative expansion

chambers. Journal of Sound and Vibration, Vol.

, pp. 1125 - 1133.

Yokota, S., Somada, H. and Yamaguchi, H. 1996.

Study on an active accumulator. JSME International

Journal, Vol. Series B, Vol 39, pp. 119 - 124.

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Published

2013-08-01

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