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 ...
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.