This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Acoustic Modal Analysis and Transmission Properties of a Prototype Induction System
Annotation ability available
Sector:
Language:
English
Abstract
The objective of this study was to determine whether standard modeling packages could be used to predict the acoustical response of an IC-engine induction system. To determine the answer to this question, we constructed from acrylic plastic a “prototype” induction system for a four-cylinder engine. Two modeling packages were used. The first package used was BEMAP, a boundary element program designed specifically for acoustical modeling. The second package used was ANSYS, a general purpose finite element program. For both BEMAP and ANSYS, a radiation boundary condition was used at the air intake of the induction system. Results from BEMAP and ANSYS are compared to experimental data. The experimental results were obtained by exciting one of the induction system intake ports with a small loudspeaker and measuring the transfer function between the sound pressure at the air inlet and the sound pressure at the intake port. All three sets of results exhibit good agreement.
Authors
Citation
Shugong, L. and Seybert, A., "Acoustic Modal Analysis and Transmission Properties of a Prototype Induction System," SAE Technical Paper 891170, 1989, https://doi.org/10.4271/891170.Also In
References
- Bender E. K. Brammer A. J. “Internal Combustion Engine Intake and Exhaust System Noise,” J. Acoust. Soc. Am. 58 22 30 1975
- Sachs M. P. Hackney S. “Performance of Acoustic Components for Engine Induction Systems,” SAE paper 88081 Detroit, Michigan 1988
- Lamancusa J. S. Bohenich J. T. “Sources of Discrete Tones in Automobile Induction Systems,” Proceedings, Inter-Noise 86 245 250 1986
- Chen L. H. Schweikert D. G. “Sound Radiation from an Arbitrary Body,” J. Acoust;. Son. Am. 35 1626 1632 1963
- Chertock G. “Sound Radiation from Vibrating Surfaces,” J. Acoust. Soc. Am. 36 1305 1313 1964
- Copley L. G. “Integral Equation Method for Radiation from Vibrating Bodies,” J. Acoust. Soc. Am. 41 807 816 1967
- Copley L. G. “Fundamental Results Concerning Integral Representations in Acoustic Radiation,” J. Acoust. Soc. Am. 44 28 32 1968
- Schenck H. A. “Improved Integral Formulation for Acoustic Radiation Problems,” J. Acoust. Soc Am. 44 41 58 1968
- Engblom J. J. Kelson R. B. “Consistent Formulation of Sound Radiation from Arbitrary Structure,” ASME J. Appl. Mech. 97 295 300 1975
- Bell W. A. Meyer W. L. Zinn B. T. “Predicting the Acoustics of Arbitrarily Shaped Bodies Using an Integral Approach,” AIAA J. 15 6 813 820 1977
- Koopman G. H. Benner H. “Method for Computing the Sound Power of Machines Based on the Helmholtz Integral,” J. Acoust. Soc. Am. 71 78 89 1982
- Soenarko B. “An Advanced Boundary Element Formulation for Acoustic Radiation and Scattering in Three Dimensions,” Department of Mechanical Engineering, University of Kentucky 1983
- Seybert A. F. Soenarko B. Rizzo F. J. Shippy D. J. “Application of the BIE Method to Sound Radiation Problems Using an Isoparametric Element,” ASME J. Vib. Acoust. Stress Rel. Dsgn. 106 414 420 1984
- Seybert A. F. Soenarko B. Rizzo F. J. Shippy D. J. “An Advanced Computational Method for Radiation and Scattering of Acoustic Waves in Three Dimensions,” J. Acoust. Soc. Am. 77 362 368 1985
- Seybert A. F. Soenarko B. Rizzo F. J. Shippy D. J. “A Special Integral Equation Formulation for Acoustic Radiation and Scattering for Axisymmetric Bodies and Boundary Conditions,” J. Acoust. Soc. Am. 80 1241 1247 1986
- Tanaka T. Fujikawa T. Abe T. Utsuno H. “A Method for the Analytical Prediction of Insertion Loss of a Two-Dimensional Muffler Model Based on the Transfer Matrix Method Derived from the Boundary Element Method,” ASME J. Vib. Acoust. Stress Rel. Dsgn. 107 86 91 1985
- Seybert A. F. Cheng C. Y. R. “Application of the Boundary Element Method to Acoustic Cavity Response and Muffler Analysis,” J. Vib. Acoust. Stress Rel. Dsgn. 109 15 21 1987
- Kipp C. R. Bernhard R. J. “Prediction of Acoustical Behavior in Cavities Using an Indirect Boundary Element Method,” ASME J. Vib. Acoust. Stress Rel. Dsgn. 109 22 28 1987
- Cheng C. Y. R. Seybert A. F. Liu Shugong “Acoustic Resonator Analysis Using the Boundary Element Method for Application to Air-Handling System Design,” ASKRAE Winter Meeting Chicago, Illinois January 29 1989
- Nefske, D. J. Wolf, J. A. Jr. Howell, L. J. “Structural-Acoustics Finite Element Analysis of the Automobile Passenger Compartment: A review of Current Practice,” J. Sound Vib. 80 2 247 266 1982
- Marulo, Francesco Beyer, Todd B. “NASTRAN Application For the Prediction of Aircraft Interior Noise,” Fifteenth NASTRAN Users Colloquium, Proceedings NASA Science and Technical Information Office 226 276 1987
- Craggs, A. “The Use of Simple Three-Dimensional Acoustic Finite Elements for Determining the Natural Modes and Frequencies of Complex Shaped Enclosures,” J. Sound Vib. 23 3 331 339 1972
- Petyt, M. Lea, J. Koopman, G. H. “A Finite Element Method for Determining THe Acoustic Modes of Irregular Shaped Cavities,” J. Sound Vib. 45 4 495 502 1976
- Petyt, M. Koopman, G. H. Pennington, R. J. “The Acoustic Modes of a Rectangular Cavity Containing a Rigid, Incomplete Partition,” J. Sound Vib 53 1 71 82 1977
- Lamancusa, John S. “Acoustic Finite Element Modeling Using Commercial Structural Analysis Programs,” Noise Control Engineering Journal 30 2 65 71 1988
- BEMAP Version 2.3 User's Guide Spectronics, Inc.