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윤승원(Seungwon Youn),한만철(Man-Cheol Han) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.11_2
Brake judder caused by disc runout and disc thickness variation was investigated. Experimental data shows that disc runout and disc thickness variation are influential source of so called cold judder. Judder amplitude is proportional to vehicle speed and brake pedal operation speed. Judder frequency is directly related to rotational speed of brake disc and the number of poles of periodic distribution of disc runout and disc thickness variation, but there is no relationship between judder frequency and natural frequency of brake disc.