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Vibrational Power Flow and Its Application to a Passenger Car for Identification of Vibration Transmission Path
Technical Paper
2001-01-1451
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Reduction of structure-borne noise in the compartment of a car is an important task in automotive engineering. Transfer path analysis using the vibroacoustic reciprocity technique or multiple path decomposition method has generally been used for structure-borne noise path analysis. These methods are useful for solving a particular problem, but they do not quantify the effectiveness of vibration isolation of each isolator of a vehicle. To quantify the effectiveness of vibration isolation, vibrational power flow has been used for a simple isolation system or a laboratory-based isolation system. It is often difficult to apply the vibrational power flow technique to a complex isolation system like a car. In this paper, a simple equation is derived for calculation of the vibrational power flow of an isolation system with multiple isolators such as a car. It is successfully applied not only to quantifying the relative contributions of eighteen isolators, but also to reducing the structure-borne noise of a passenger car. According to the results, the main contributor of the eighteen isolators is the rear roll mount of an engine. The reduced structure-borne noise level is about 5dBA.
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Authors
- Sang-Kwon Lee - Department of Mechanical Engineering, Inha University
- Ki-Sung Park - Department of Mechanical Engineering, Inha University
- Min-Sung Lee - Department of Mechanical Engineering, Inha University
- Kyoun-Rae Rho - Department of Mechanical Engineering, Inha University
- Jang-Sun Sim - Department of Mechanical Engineering, Inha University
- Joong-Hee Kim - Renault Samsung Motors Co.
Topic
Citation
Lee, S., Park, K., Lee, M., Rho, K. et al., "Vibrational Power Flow and Its Application to a Passenger Car for Identification of Vibration Transmission Path," SAE Technical Paper 2001-01-1451, 2001, https://doi.org/10.4271/2001-01-1451.Also In
References
- Lee, S. K. et.al. “Weight Reduction and Noise Refinement of Hyundai 1.5 Liter Powertrain” SAE 940995
- Van der Linden, P. J. G Fun, J. K. 1993 Using Mechanical-Acoustic Reciprocity for Diagnosis of Structure Borne Sound in Vehicles,” SAE 931340
- Hendricx, W. Vandenbroeck, D. 1993 “Suspension Analysis in View of Road Noise Optimization,” SAE 931343
- Pinnington, R. J. 1987 “Vibrational Power Flow Transmission to a Seating of a Vibration Isolated Motor” Journal of Sound and Vibration 118 3 515 530
- Goyder, H. G. D. White, R. G. 1980 “Vibrational power Flow From Machines into Builtup Structure, Part I, II, III” Journal of Sound and Vibration 68 1 59 75
- Pinnington, R. J. 1981 “Power Flow Through Machine Isolators to Resonant and Non-Resonant Beams,” Journal of Sound and Vibration 75 2 179 197
- Pinnington, R. J. 1996 “Transient Energy Flow Between Two Coupled Beams” Journal of Sound and Vibration 189 2 265 287
- Petersson, B. Plunt, J. 1982 “On Effective Mobilities in the Prediction of Structure-Borne Sound Transmission between a Source Structure and a Receiving Structure, Part I, II, III,” Journal of Sound and Vibration 82 4 517 540