Iulian LUPEA


Abstract: The dynamics of a car exhaust system is under observation, the vibration simulation being of particular interest. For rapid evaluation of the vertical vibrations of the system a lumped dynamic model is derived and integrated over time. Some of the system parameters are measured, others are estimated by using comparisons between measurements and finite elements analysis and some are estimated. The hanger rigidity coefficient is derived from the frequency response function measured by using the impulsive method on a system consisting of the hanger stretched by a gravity load. The system of differential equations is integrated and the natural frequencies are derived.
Keywords: exhaust system, rubber hanger, frequency response function, differential equations.

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Gaoncar, C., Modal Analysis of Exhaust System to Optimize Mounting Hanger Location, International Journal of Engineering Research & Technology (IJERT), 2015

Lauwagie, T., Strobbe, J., Dascotte, E., Clavier, J. and Monteagudo, M., Optimization of the dynamic response of a Complete Exhaust System, Proceedings of the IMAC-XXVII Feb. 9-12, 2009 Orlando, Florida USA Society for Experimental Mechanics Inc., 2009.

Li, S.,B., Guan, X., Lu, T. and Zhang, J., Vehicle modeling with the exhaust system and experimental validation to investigate the exhaust vertical vibration characteristics excited by road surface inputs, Int. J. Automotive Technology, 9, 4, 483-491, 2008

Lupea, I., A lumped mass exhaust system model, Acta Technica Napocensis, App. Math and Mech., vol.54, Issue IV, 2015.

Lupea, I., Updating of an exhaust system model by using test data from EMA, Proceedings of the Romanian Academy, series A, Volume 14, Number 4/2013, pp. 326-334

Lupea, I., Vibration and noise measurement by using Labview programming, Casa Cărţii de Ştiinţă, Cluj-Napoca, 2005.

Lupea, I., Szathmari, R., Vibroacoustic frequency response on a passenger compartment, Journal of Vibroengineering, Kaunas, Lithuania, vol. 12 (4), Dec. 2010.

Lupea, I., Roboţi şi vibraţii, Editura Dacia, Cluj-Napoca, 1996.

Sheng, G., Vehicle noise vibration and sound quality, SAE International, Warrendale, USA, 2012.



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