Kim, D.; Jeon, S.; Lee, J.; Kwak, K.; Cho, M.; Lee, H.; Kim, M.; Chung, J. Strategies for Reducing Booming Noise Generated by the Tailgate of an Electric Sport Utility Vehicle. Appl. Sci.2023, 13, 13134.
Kim, D.; Jeon, S.; Lee, J.; Kwak, K.; Cho, M.; Lee, H.; Kim, M.; Chung, J. Strategies for Reducing Booming Noise Generated by the Tailgate of an Electric Sport Utility Vehicle. Appl. Sci. 2023, 13, 13134.
Kim, D.; Jeon, S.; Lee, J.; Kwak, K.; Cho, M.; Lee, H.; Kim, M.; Chung, J. Strategies for Reducing Booming Noise Generated by the Tailgate of an Electric Sport Utility Vehicle. Appl. Sci.2023, 13, 13134.
Kim, D.; Jeon, S.; Lee, J.; Kwak, K.; Cho, M.; Lee, H.; Kim, M.; Chung, J. Strategies for Reducing Booming Noise Generated by the Tailgate of an Electric Sport Utility Vehicle. Appl. Sci. 2023, 13, 13134.
Abstract
This article investigates the source of booming noise emanating from the tailgates of electric vehicles, along with proposed strategies to mitigate it. This study involved the measurement of booming noises during on-road vehicle tests to pinpoint their origins. Additionally, operational deflection shapes (ODS) were extracted from the tailgate vibration signals to gain insight into its dynamic behavior. Modal tests were conducted on the tailgate to determine its dynamic characteristics and compared with driving test results to reveal the mechanism responsible for tailgate-induced booming noise. It was established that such noise is primarily due to the tailgate modes resulting from a combination of rigid body motion in the fore-aft direction and deformation in the central section of the panel. An analytical model of the tailgate was developed using commercial finite element analysis software to propose measures for reducing booming noise. Experimental findings validated the model accuracy. Structural enhancements were implemented to enhance the panel stiffness and improve the connection between the vehicle and tailgate via bushings to dampen the booming noise resulting from tailgate motion. Under random force inputs, analytical results demonstrated a 13.8% reduction in maximum deformation in the tailgate model in the improved structural configuration with increased panel stiffness.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
