Abstract
Creep groan noise is a low-frequency, structure-borne noise that generally occurs when a vehicle starts moving from a standstill or comes to a gradual stop with minimal brake operation. It is generated by friction-induced vibrations from the stick-slip cycle of the brakes and are typically transmitted through the suspension. The investigations in this paper aim to reduce the creep groan noise by considering the frequency characteristics of the suspension. Transfer path analysis (TPA) is performed to identify the noise contribution of each suspension component. Thereafter, the cause of acoustic amplification and stick-slip cycle of creep groan are investigated through modal testing on the primary transfer path components. The noise level and trigger rate of creep groan noise are reduced by suppressing the behavior of the components using a dynamic vibration absorber (DVA). This shows the possibility of creep groan noise reduction from the perspective of the vehicle’s transfer system.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Transactions of the Korean Society for Noise and Vibration Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
