Uncertainty in vibration energy flow analysis

• Autorzy: Bochniak W. , Cieślik J.
• Języki publikacji: EN

Abstrakty

EN

Introducing uncertainty considerations into simulation will facilitate exactitude assessment and help to boost the designer's confidence in simulation. The sources of uncertainty marked as the sensitivity parameters have an impact on the vibrational energy flow simulation and must be factored into the solution process. One of these parameters, the excitation frequency, has been identified and analyzed. The techniques for quantifying the effects of uncertainties are presented. The transmission of vibrational energy flow in plates is analyzed by the structural intensity method. A typical case for vehicle structures has been selected as an example: a simply supported plate under tangential force excitation. The relations between the structural intensity distribution and structural mode shapes and the effects of excitation frequency on the changes of energy flow in plate are discussed. Finally, the potential application of the structural intensity technique towards for the design of vehicle structures is discussed.

Słowa kluczowe

EN

vibration energy; structural intensity; uncertainty of energy distribution

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2005
• Tom: Vol. 30, No. 4
• Strony: 451--463
• Opis fizyczny: Bibliogr. 12 poz., tab., wykr.

Twórcy

autor

Bochniak W.

• AGH University of Science and Technology, Department of Robotics and Machine Dynamics, Al. Mickiewicza 30, 30-059 Kraków, Poland

autor

Cieślik J.

• AGH University of Science and Technology, Department of Robotics and Machine Dynamics, Al. Mickiewicza 30, 30-059 Kraków, Poland

Bibliografia

• [1] BOCHNIAK W., CIEŚLIK J., PIECZARA J., Zastosowanie natężenia dźwięków strukturalnych do badania przepływu energii drganiowej, Proc. VI Szkoła Analizy Modalnej, 11–12.12, Kraków, pp. 29–34, 2001.
• [2] CIEŚLIK J, Metody natężeniowe dla dźwięków materiałowych, Wydawnictwo Katedry Robotyki i Dynamiki Maszyn AGH, Kraków 2001.
• [3] CIEŚLIK J., Metody natężeniowe w analizie elementów konstrukcyjnych, Studia Rozprawy Monografie, 114, Wyd. Instytutu Gospodarki Surowcami Mineralnymi i Energia˛ PAN, Kraków 2002.
• [4] CIEŚLIK J., Vibration energy flow in rectangular plates, J. of Theoretical and Applied Mechanics, 42, 1, 2004.
• [5] CIEŚLIK J., Intensity vector fields in application to vibrational energy flow, Proc. of CMM-2003 – Computer Methods in Mechanics, June 3–6, 2003, Gliwice, pp. 105–106.
• [6] GAVRIC L., Influence de modifications locales sur le flux d’energie dans les structures a paroi mince (Influence of local modifications on energy flow in thin-walled structures), Ph.D. Thesis, Université de Technologie de Compiegne, Compiegne 1991.
• [7] GAVRIC L., PAVIC G., Computation of structural intensity in beam-plate structures by numerical modal analysis using FEM, Proc. of the Third Int. Conf. on Intensity Techniques, Senlis, pp. 207–214, 1990.
• [8] GAVRIC L., Computation of structural intensity for a wide band excitation using normal mode approach, Proc. of the 17 Internat. Sem. on Modal Analysis, 3, pp. 193–206, 1992.
• [9] GAVRIC L., PAVIC G., A finite element method for computation of structural intensity by normal mode approach, J. of Sound and Vibration, 164, 1, 29–43 (1993).
• [10] HAMBRIC S. A., Power flow and mechanical intensity calculations in structural finite element analysis, J. of Sound and Vibration, 112, 542–549 (1990).
• [11] KLEIJNEN J. P. C., Sensitivity analysis and related analyses: a survey of statistical techniques, SAMO95, Conference Proceedings, 1996.
• [12] MACDONALD, A. I., J. A. CLARKE, P. A. STRACHAN, Assessing uncertainty in building simulation, Proceedings of Building Simulation ’99, 2, pp. 683–690, 1999.