This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Attenuation of Engine Torsional Vibrations Using Tuned Pendulum Absorbers
Annotation ability available
Sector:
Language:
English
Abstract
In this paper results are presented from a study that investigates the use of centrifugally driven pendulum vibration absorbers for the attenuation of engine torsional vibrations. Such absorbers consist essentially of movable counterweights whose center of mass is restricted to move along a specified path relative to the rotational frame of reference. These devices are commonly used in light aircraft engines and helicopter rotors. The most common designs use a circular path for the absorber, tuned to a particular order of rotor disturbance, although more recent developments offer a wider variety of paths. Our goal here is to evaluate the system performance for a range of path types with different types of tuning. This analytical study is carried out for a simple mechanical model that includes a rotor and an absorber riding along a quite general path. Approximate solutions are obtained using a perturbation scheme and compared with detailed computational results. These results provide some valuable guidelines for path design considerations.
Recommended Content
Authors
Topic
Citation
Shaw, S., Garg, V., and Chao, C., "Attenuation of Engine Torsional Vibrations Using Tuned Pendulum Absorbers," SAE Technical Paper 971961, 1997, https://doi.org/10.4271/971961.Also In
References
- DEN HARTOG J. P. Tuned pendulums as torsional vibration eliminators Stephen Timoshenko 60th Anniversary Volume 17 26 The Macmillan Company 1938
- KER WILSON W. Practical Solution of Torsional Vibration Problems , chapter XXX IV Chapman and Hall Ltd London, London 3rd 1968
- WHITE G. 1995 Allied Aircraft Piston Engines of World War II SAE Inc. Warrendale, PA
- ALBRIGHT M. CRAWFORD T. SPECKHART F. Dynamic testing and evaluation of the torsional vibration absorber II Engines and Drivetrains, P-288 185 192 Motor Sports Engineering Conference Proceedings 1994
- NEWLAND D. E. 1964 ASME Journal of Engineering for Industry 86 257 263 Nonlinear aspects of the performance of centrifugal pendunlum vibration absorbers
- MADDEN J. F. 1980 United States Patent No. 4218187 Constant frequency bifilar vibration absorber
- DENMAN H. H. 1992 Journal of Sound and Vibration 159 251 277 Tautochronic bifilar pendulum torsion absorbers for reciprocating engines
- BOROWSKI V. J. DENMAN H. H. CRONIN D. L. SHAW S. HANISKO J. P. BROOKS L. T. MILULEC D. A. CRUM W. B. ANDERSON M. P. Reducing vibration of reciprocating engines with crankshaft pendulum vibration absorbers The Engineering Society for Advanced Mobility Land, Sea, Air and Space 1991 SAE Technical Paper Series 911876
- LEE C.-T. SHAW S. W. Torsional vibration reduction in internal combustion engines using centrifugal pendulums ASME Design Engineering Technical Conference 84 1 3 487 492 1995
- LEE C.-T. SHAW S. W. A Comparative Study of Nonlinear Centrifugal Pendulum Vibration Absorbers Nonlinear and Stochastic Dynamics, ASME 192 78 91 98 1994
- LEE C.-T. SHAW S. W. COPPOLA V. T. 1997 ASME Journal of Vibration and Acoustics A subharmonic vibration absorber for rotating machinary
- GARG V. K. 1996 Effects of mistuning on the performance of centrifugal pendulum vibration absorbers Department of Mechanical Engineering, Michigan State University East Lansing
- CHAO C.-P. LEE C.-T. SHAW S. W. 1997 Journal of Sound and Vibration Non-unison dynamics of multiple centrifugal pendunlum vibration absorbers
- CHAO C.-P. SHAW S. W. LEE C.-T. 1997 ASME Journal of Applied Mechanics Stability of the unison response for a rotating system with multiple centrifugal pendunlum vibration absorbers