文章摘要
黄盼盼,陈光雄,莫继良.基于瞬态分析法的轮盘制动系统摩擦自激振动研究[J].润滑与密封,2014,39(8):63-67
基于瞬态分析法的轮盘制动系统摩擦自激振动研究
  
DOI:10.3969/j.issn.0254-0150.2014.08.013
中文关键词: 制动噪声  尖叫噪声  瞬态分析法  复特征值法
英文关键词: brake squeal  brake noise  transient analysis  complex eigenvalue analysis method
基金项目:国家自然科学基金项目(U1134103;51275429).
作者单位E-mail
黄盼盼 西南交通大学 摩擦学研究所 swjtuhuangpan@126.com 
陈光雄 西南交通大学 摩擦学研究所  
莫继良 西南交通大学 摩擦学研究所  
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中文摘要:
      在制动噪声的有限元分析方法中,复特征值方法预测得到的不稳定频率过于保守,而瞬态分析方法在理论上可以得到较为真实的不稳定频率。考虑制动闸片与制动盘接触点间的摩擦力耦合作用,基于建立的高速动车轮盘制动系统的有限元模型,采用瞬态分析法对高速动车轮盘制动系统进行摩擦自激振动分析,并与复特征值分析法得到结果的进行比较。结果表明,接触面间法向接触力的振动主频与闸片法向振动的主频一致;制动系统瞬态动力学分析得到的振动主频与其复特征值分析得到的不稳定频率基本相符。
英文摘要:
      There are two analysis methodologies available for predicting brake squeal using the finite element method, namely, complex eigenvalue analysis method and dynamic transient analysis method. Not all the unstable frequency obtained using complex eigenvalue analysis method can be observed in experiments, while transient analysis method is able to predict real unstable frequency in theory. A transient dynamic model of a wheel disc brake system of EMU was established to study friction induced self excited vibration of the brake system, in which the friction coupling between brake pads and disc was imposed. Results show that the value of the dominant vibration frequency of the contact force between the brake pad and disc is consistent with that of the normal vibration of the brake pad. The dominant vibration frequency obtained by the transient analysis method is very close to the value of the unstable frequency obtained by the complex eigenvalue method.
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