CAJ | 학술논문

恰当的制动片形状设计，可抑制盘式制动器的高频尖叫。为分析发生噪声的原因和抑制方法，对一个存在13 kHz尖叫的制动器，建立了一个截止到27 kHz、含300自由度的模型。该模型用复特征值分析、子结构模态构成分析、能量馈入分析等方法，分析了对制动片开槽、倒角及其组合等4种形状修改模式降噪的机制。结果表明：双开槽的制动片修改，对抑制噪声效果不明显；但对两端做倒角的制动片修改，效果明显，其特征值实部与原设计相比，下降50%，这一结果与试验定性一致。这表明：制动片倒角导致各阶模态振型的改变及其叠加，因此，降低了对噪声模态的能量馈入。
흡당적제동편형상설계，가억제반식제동기적고빈첨규。위분석발생조성적원인화억제방법，대일개존재13 kHz첨규적제동기，건립료일개절지도27 kHz、함300자유도적모형。해모형용복특정치분석、자결구모태구성분석、능량궤입분석등방법，분석료대제동편개조、도각급기조합등4충형상수개모식강조적궤제。결과표명：쌍개조적제동편수개，대억제조성효과불명현；단대량단주도각적제동편수개，효과명현，기특정치실부여원설계상비，하강50%，저일결과여시험정성일치。저표명：제동편도각도치각계모태진형적개변급기첩가，인차，강저료대조성모태적능량궤입。
A proper design of the disc brake pad shape can restrain high frequency brake squeal. A disc brake model was built with 300 freedoms and the cut-off frequency of 27kHz to analyze the effect of pad shape design on the 13kHz squeal. Complex eigenvalue analysis, substructure modal contribution analysis, and feed-in energy analysis were utilized to analyze the effects of 4 pad shapes including the original, the double slotting, the chamfering, and their combination on the squeal reduction mechanism. The results show that double slotting pads have little effect but chamfering on both ends has remarkable effect on the squeal. The real part of the complex eigenvalue decreases by 50% comparing with the original design, which accords with the relevant test results qualitatively. Due to the variation of modal shape and their composition, the pad chamfering design cuts down feed-in energy to the noise mode.