Experimental assessment of coupling loss factors of thin rectangular plates

• Autorzy: Panuszka R. , Wiciak J. , Iwaniec M.
• Języki publikacji: EN

Abstrakty

EN

Knowledge of Coupling Loss Factors (CLF's) for energy flow evaluation in structural elements of complex mechanical systems is fundamental. Several experiments were conducted to evaluate CLFs of different perpendicular connections of rectangular plates. The method of energy storage was conducted under acoustic free-field conditions, and a large number of thin plates with different designs of junctions were examined. The tests included two types of connections: welded line junction and point junctions. In the first type of connection, the influence of the thickness ratio of plates on CLFs values was tested. In the second type of connection the influence of the point of distribution at junctions on CLFs values were tested. Other tests were done to establish the impact of junction design on CLFs. Welded line junctions have a tendency to decrease the CLFs when the ratio of thickness of plates is increased. The CLFs also increase with density of joining points. Maximal values of CLFs were observed for spot-welded junctions. Mid-values were represented by screw-bolted joints and the lowest values by riveted junctions.

Słowa kluczowe

EN

statistical energy analysis; coupling loss factor; rectangular plates connections; welded junction; point junction; acoustic power flow

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2005
• Tom: Vol. 30, No. 4
• Strony: 533--551
• Opis fizyczny: Bibliogr. 47 poz., rys., tab., wykr.

Twórcy

autor

Panuszka R.

• University of Science and Technology AGH, Laboratory of Structural Acoustics and Intelligent Materials, Al. Mickiewicza 30, 30-059 Kraków, Poland

autor

Wiciak J.

• University of Science and Technology AGH, Laboratory of Structural Acoustics and Intelligent Materials, Al. Mickiewicza 30, 30-059 Kraków, Poland

autor

Iwaniec M.

• University of Science and Technology AGH, Laboratory of Structural Acoustics and Intelligent Materials, Al. Mickiewicza 30, 30-059 Kraków, Poland

Bibliografia

• [1] BIES, D. A., HAMID, S., In situ determination of loss and coupling loss factors by the power injection method, J. Sound Vib., 70, 187–203 (1980).
• [2] BOSMANS, I., MEES, P., VERMEIR, G., Structure-borne sound transmission between thin orthotropic plates: analytical solutions, J. Sound Vib., 191, 75–90 (1996).
• [3] CONTACT BREMNER P., Vibro-Acoustics Science Inc., 5355 Mira Sorrento Place, Suite 100, San Diego, CA 92121, Telephone: [phone] for more information on AutoSEA.
• [4] CLIFTON, S. M., AutoSEA user guide, Vibro-Acoustic Science Publication, V.1.3, 1993.
• [5] CRAIK, R. J. M., A study sound transmission through buildings using statistical energy analysis, Ph.D. thesis, Herriot-Watt University, U.K. 1980.
• [6] CREMER, L., HECKL, M., UNGAR, E. E., Structure-borne sound, Spring-Verlag, Berlin 1988.
• [7] CROCKER, M. J., PRICE, A. J., Sound transmission using statistical energy analysis, J. Sound Vib., 9, 469–486 (1969).
• [8] CUSCHIERI, J. M., SUN, J. C., Use of statistical energy analysis for rotating machinery, Part I: Determination of dissipation and coupling loss factors using energy ratios, J. Sound Vib., 170, 181–190 (1994).
• [9] CUSCHIERI, J. M., SUN, J. C., Use of statistical energy analysis for rotating machinery, Part III: Experimental verification with machine on foundation, J. Sound Vib., 170, 201–214 (1994).
• [10] ENGEL, Z. GAWLIK, M., Vibroacoustic reciprocity principle in examination of musical instruments, Archives of Acoustics, 27, 4, 263–276 (2002).
• [11] FAHY, F. J., Sound and structural vibration: radiation, transmission and response, Academic Press, London 1985.
• [12] FAHY, F. J., JAMES, P. P., A study of the kinetic energy impulse response as an indicator of the strength of coupling between SEA subsystems, J. Sound Vib., 190, 363–386 (1996).
• [13] FREDO, C. R., Prediction of structure-borne sound in a simplified model of a motor vehicle using the method of statistical energy analysis, Chalmers University of Technology, Goeteborg, Report E88-02, 1988.
• [14] GARDNER, B. K., SHORTER, P. J., BREMNER, P. G., Combining statistical energy analysis in resound mid frequency vibroacoustic analysis, JASA, 112, 5., Pt.2 of 2., 2302, (2002).
• [15] HYNN, P., KLINGE, P., VOUKSINEN, J., Prediction of structure borne sound transmission in large ship structures using statistical energy analysis, J. Sound Vib., 180, 583–607 (1995).
• [16] IWANIEC, M. PANUSZKA, R. WICIAK, J., The evaluation of the influence of modification of plates connection on value of the vibrational energy flow transmission, Proceedings of the Open Seminar on Acoustics, OSA’96. 283–286, 1996.
• [17] IWANIEC, M. PANUSZKA, R. WICIAK, J., Application of the SEA method for modification of the structure of walls of acoustic enclosure, Proceedings of the XXVI Winter School on Noise Control, Poland. 35–42, 1996.
• [18] CONTACT KERN, F., Atlantic Applied Research Corp., 4A Street, Burlington, MA 01803, Telephone [phone] for more information on AARC-SEA.
• [19] KIERZKOWSKI, M., Metoda pomiaru bocznego przenoszenia dźwięku w budynku [in Polish], Doctoral Thesis, Institute of Buildings Technology, Warszawa 1983.
• [20] LALOR, N. STIMPSON, G. FEM+SEA+Optimalization = Low Noise, Proc. ATA Conf. on Vehicle Comfort. Bologna 1992.
• [21] LALOR, N., The Evaluation of SEA Coupling Loss Factors, Proc. School on Energy Methods in Vibroacoustics – Supplement. Table 2. Kraków, University of Science and Technology, AGH, 1996.
• [22] LANGLEY, R. S., A general derivation of the statistical energy analysis equations for coupled dynamic systems, J. Sound Vib., 135, 499–508 (1989).
• [23] LANGLEY, R. S., A derivation of the coupling loss factors used in statistical energy analysis, J. Sound and Vib., 141, 207–219 (1990).
• [24] LEMMEN, R. C. I., Finite element method in power flow analysis and statistics energy analysis, Proceedings of the IV-th School on Energy Methods in Vibroacoustics, Zakopane 25–35, 1995.
• [25] LEMMEN, R. C. I., Using the finite element method for calculating of the coupling loss factors of two connected rectangular plates, The Archive of Mechanical Engineering, 44, part 1, 21–42, (1997).
• [26] LYON, R., MAIDANIK, G., Power flow between linearly coupled oscillators, J. Acoust. Soc. Am., 34, 623–639 (1962).
• [27] LYON, R., Statistical energy analysis of dynamical system – theory and applications, M.I.T. Press, 1975.
• [28] LYON, R., DEJONG, R., Theory and application of statistical energy analysis, Butterworth-Heinemann, Boston 1995.
• [29] MALCHAREK, P. MARCZUK, R. PANUSZKA, R., The analysis of the acoustical power radiation from ribbed panels by SEA and experimental methods, Journal of Mechanics, AGH University, 4, 403–416 (1996).
• [30] CONTACT MANNING, J., Cambridge Collaborative Inc., 689 Concord Avenue, Cambridge, MA 021138, Telephone [phone] for more information on SEAM.
• [31] MING, R., The Measurement of Coupling Loss Factors using the Structural Intensity Technique, J. Acoust. Soc. Am., 103, 410–407 (1997).
• [32] MULLER B. B. M., 1995 Statistische Energie Analyse, Grundlangen und anwendungen, 28–29Marz, Planneg/Munchen, Germany 1995.
• [33] NORTON, M. P., Fundamental of noise and vibration analysis for engineers, Cambridge University Press, 1999.
• [34] PANUSZKA, R., The influence of stiffness and boundary conditions of thin rectangular plates on radiated acoustic power, Applied Acoustics, 46, 345–362 (1995).
• [35] PANUSZKA, R. SMALS, N. FORTUIN J., Method of estimating the coupling loss factor for a set of plates, Journal of Mechanics, University of Science and Technology AGH, Krakow, 10, 2, 5–20 (1991).
• [36] PANUSZKA, R., Energy methods in vibroacoustics, Ed. Polish Acoustical Society, Kraków 1994.
• [37] PANUSZKA, R., Energy methods in vibroacoustics, (chapter of the book ed. by Z. Engel), Science and Life, Warszawa 1995.
• [38] PANUSZKA, R. [Ed.] and CIEŚLIK, J. IWANIEC, M. WICIAK, J. Applications of AutoSEA Software in Practice. Ed. Polish Acoustoical Society. ISBN 83-903701-1-5, (1995).
• [39] SCHEAFFER, L., MCCLAVE, J. T., Probability and statistics for engineers, PWS-KENT Pub. Com., Boston 1986.
• [40] SCHORTON, T. D., LYON, R. H., Power flow and energy sharing in random vibration, J. Acoust. Soc. Am., 43, 1332–1343 (1968).
• [41] STEEL, J. A., The prediction of structure vibration transmission through a motor vehicle using statistical energy analysis, J. Sound Vib., 193, 691–703 (1996).
• [42] WESTER, E. C. N., MACE, B. R., Statistical energy analysis of two edge-coupled rectangular plates: ensemble averages, J. Sound Vib., 193, 794–822 (1996).
• [43] WICIAK, J. PANUSZKA, R., Estimation of the CLF factors for flexural plates in SEA modelling, Proceedings of the V-th School on Energy Methods in Vibroacoustics, Zakopane, 197–200, 1996.
• [44] WICIAK, J. IWANIEC, M. PANUSZKA, R., The prediction of the structure borne sound on the surfaces of car muffler, The Archive of Mechanical Engineering, 44, 3, 279–290 (1997).
• [45] WICIAK, J., The analysis of the transmission structure borne sound in complex mechanical systems on example of thin plates, PhD. Thesis. Library of University Science and Technology, AGH, Kraków 1998.
• [46] WOHLE, W., BECKMANN, TH., SCHRECKENBACH, H., Coupling loss factors for statistical energy analysis of sound transmission at rectangular structural slab joints. Part I, J. Sound Vib., 77, 323–334 (1975).
• [47] WOHLE, W., BECKMANN, TH., SCHRECKENBACH H., Coupling loss factors for statistical energy analysis of sound transmission at rectangural structural slab joints. Part II, J. Sound Vib., 77, 335–344 (1975).