A Clamped Bar Model for the Sompoton Vibrator

• Autorzy: Wong T. H. , Dayou J. , Ngu M. C. D. , Hang J. H. W. , Liew W. Z. H.
• Języki publikacji: EN

Abstrakty

EN

The sompoton is one of famous traditional musical instruments in Sabah. This instrument consists of several parts with the vibrator being the most important one. In this paper, the vibrator is modeled as a clamped bar with a uniformly distributed mass. By means of this model, the fundamental frequency is analyzed with the use of an equivalent single degree of freedom system (SDOF) and exact analysis. The vibrator is made of aluminum in different sizes and is excited using a constant air jet to obtain its fundamental resonance frequency. The fundamental frequency obtained from the experimental measurement is compared with the theoretical values calculated based on the equivalent SDOF and exact analysis theories. It is found that the exact analysis gives a closer value to the experimental results as compared to the SDOF system. Although both the experimental and theoretical results exhibit the same trend, they are different in magnitude. To overcome the differences in both theories, a correction factor is added to account for the production errors.

Słowa kluczowe

EN

vibrator; clamped bar; single degree of freedom system; exact analysis; resonance frequency

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2013
• Tom: Vol. 38, No. 3
• Strony: 425--432
• Opis fizyczny: Bibliogr. 15 poz.., rys., tab., wykr.

Twórcy

autor

Wong T. H.

• Energy, Sound and Vibration Research Group (e-VIBS) School of Science and Technology, University Malaysia Sabah Jalan UMS, 88400 Kota Kinabalu, Sabah, Malaysia

autor

Dayou J.

• Energy, Sound and Vibration Research Group (e-VIBS) School of Science and Technology, University Malaysia Sabah Jalan UMS, 88400 Kota Kinabalu, Sabah, Malaysia

autor

Ngu M. C. D.

• Energy, Sound and Vibration Research Group (e-VIBS) School of Science and Technology, University Malaysia Sabah Jalan UMS, 88400 Kota Kinabalu, Sabah, Malaysia

autor

Hang J. H. W.

• Energy, Sound and Vibration Research Group (e-VIBS) School of Science and Technology, University Malaysia Sabah Jalan UMS, 88400 Kota Kinabalu, Sabah, Malaysia

autor

Liew W. Z. H.

• School of Engineering and Information Technology, University Malaysia Sabah Jalan UMS, 88400 Kota Kinabalu, Sabah, Malaysia

Bibliografia

• 1. Carral S., Vergez C., Nederveen C.J. (2011), Toward a Single Reed Mouthpiece of the Oboe, Archives of Acoustics, 36, 2, 267-282.
• 2. Erkut C., Karjalainen M., Huang P., Välimäki V. (2002), Acoustical Analysis and Model-Based Sound Synthesis of the Kantele, Journal of the Acoustical Society of America. 112, 4, 1681-1691.
• 3. Fouilhe E., Goli G., Houssay A., Stoppant G. (2011), Vibration Modes of the Cello Tailpiece, Archives of Acoustics, 36, 4, 741-759.
• 4. Gere J.M., Goodno B.J. (2009), Mechanics of Materials, Cengage Learning, 7th Edition, United States of America.
• 5. Hopkin B. (1996), Musical Instrument Design, See Sharp Press, 7th Printing, Arizona, United States.
• 6. Ismail A., Samad S.A., Hussain A., Azhari C.H., Zainal M.R.M. (2006), Analysis of the Sound of the Kompang for Computer Music Synthesis, 4th Student Conference on Research and Development (SCOReD 2006), IEEE, pp. 95-98, Malaysia.
• 7. Lohri A., Carral S., Chatziioannou V. (2011), Combination Tones in Violin, Archives of Acoustics, 36, 4, 727-740.
• 8. Marasan R. (2003), Alat Muzik Sompoton NegeriSabah [in Malay], Pejabat Kebudayaan dan Kesenian Negeri Sabah, Sabah, Malaysia.
• 9. Merriman M. (1924), Mechanics of Materials, John Wiley & Sons, 10th Edition, New York, London.
• 10. Morse P.M. (1948), Vibration and Sound, McGraw- Hill Book Company, Inc, 2nd Edition, United States.
• 11. Ong C.W., Dayou J. (2009), Frequency Characteristic of Sound from Sompoton Musical Instrument, Borneo Science, 25, 71-79.
• 12. Rujinirum C., Phinyocheep P., Prachyabrued W., Laemsak N. (2005), Chemical Treatment of Wood for Musical Instruments. Part I: Acoustically Important Properties of Wood for the Ranad (Thai Traditional Xylophone), Wood Science and Technology, 39, 1, 77-85.
• 13. Skrodzka E.B., Hojan E., Proksza R. (2006), Vibroacoustic Investigation of a Batter Head of a Snare Drum, Archives of Acoustics, 31, 3, 289-297.
• 14. Skrodzka E., Lapa A., Linde B.B.J., Rosenfeld E. (2011), Modal parameters of two complete guitars differing in the bracing pattern of the soundboard, Journal of Acoustical Society of America, 130, 4, 2186-2194.
• 15. Someya S., Okamoto K. (2007), Measurement of the Flow and Its Vibration In Japanese Traditional Bam-boo Flute Using the Dynamic PIV, Journal of Visualization, 10, 4, 397-404.