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Brake Squeal Noise를 유발하는 Brake Contact Interface와 Rotor의 In-Plane Modes에 관한 연구Ⅱ
김경수(Kyungsoo Kim),조호준(Hojoon Cho),김두영(Dooyoung Kim),최원석(Wonseok Choe),박영준(Youngjoon Park),백봉범(Bongbum Back),김한규(Hankyu Kim),고승석(Seungseok Ko),정명구(Myoungkoo Chung) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
For many years, brake noise has been one of the top automotive brake warranty issues, and many studies have been conducted to reduce the squeal phenomenon by improving the rotor-pad contact interface or by decoupling modes inducing squeals. This is additional research of ‘A study of Brake Contact Interface and Rotor In-Plane Modes Induced Disc Brake Squeal noise’. This paper considers the different brake contact interfaces affecting high frequency brake squeal and introduce an effective way of reducing the problem by improving one of the brake secondary contacts. Furthermore, the reason of improving of brake secondary contact has a positive effect is investigated by modal analysis & squeal noise analysis.
백봉범(Bongbum Back),오정용(Jungyong Oh),구형찬(Hyoungchan Koo),양인석(Insuk Yang),김세혁(Sehyuk Kim),김영훈(Younghoon Kim),김한규(Hankyu Kim) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
The brake test during mountain descent is very important validation procedure at Car makers. Especially, in case of Korea car makers, They have designed the brake that was not occurred the vapor lock during Mt.Chiri descent with braking for Korea customers. Vapor lock is the dangerous phenomenon for driver and passengers who are driving on winding road at mountain. It makes driver cant stop the vehicle due that the brake fluid cannot transmit the brake line pressure in brake pipe from brake pedal to brake pads/linings in brake calipers / drum brakes. So, This brake test is essential a vehicle test procedure. This paper is based on Wearpro software was made by GM. and Brake Conner FE model analysis in order to predict the brake fluid temperature rise during Mt.Chiri descent. and To improve reliability of vehicle simulation model, We found brake dyno test is very helpful. and this paper is good approach concept for brake development such as saving cost and reducing development timing at beginning of Car project without vehicle level test by Brake CAE and Lab tests.