Brake Groan Noise Investigation and Optimization Strategy for Passenger Vehicles TATA Technologies Limited

Format:

Book

Conference/Event

Author/Creator:

Doundkar, Vikas, author.

Contributor:

Iqbal, Shoaib

Conference Name:

Symposium on International Automotive Technology (2021-09-29 : Pune, India)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2021

Summary:

Groan is a low frequency noise generated when moderate brakepressure is applied between the surfaces of the brake disc and thebrake pad at a low-speed condition. Brake groan is often veryintense and can cause large numbers of customer complaints. Duringa groan noise event, vehicle structure and suspension componentsare excited by the brake system and result in a violent event thatcan be heard and felt during brake application. The cause of noiseis friction variation of stick-slip phenomenon between frictionmaterial and disc. This paper discusses the approach for predictionand mitigation of brake groan noise for passenger vehicles havingdisc brakes. To identify the brake groan noise frequency, vehicletesting with operating condition for reproducing the groan noise iscarried out and also impact frequency response analysis isperformed to identify natural frequency of each chassis componentlike brake, suspension stud, lower control arm, knuckle et cetera Thefinite element corner module plus sub-frame model with appropriateboundary condition is developed. Impact frequency response andmodal frequency response simulation results are in good agreementwith corresponding test results. The developed model is furtherutilized for the studying effect of various factors like suspensionbushing stiffness, sub frame stiffness, add on mounting bushing forsub frame, stiffness of lower control arm, stiffness of carriermounting area and stiffness of damper and addition of mass atvarious location on response frequency and amplitude. Based onranking it is observed that combined higher stiffness of dampersub-assembly and strut top bush are potential solution to reducebrake groan noise

Notes:

Vendor supplied data

Publisher Number:

2021-26-0301

Access Restriction:

Restricted for use by site license