Brake squeal is one of the most common problems in automobile industry that results in significant warranty cost. To reduce warranty cost due to brake squeal and provide guidance for brake design, it is important to understand the contributions of key brake design parameters for brake noise. This type of noise occurs when a brake system experiences large amplitude mechanical vibration and is audible in 1,000 to 15,000 Hz frequency range.In this paper, an approach to study the drum brake squeal based on finite elements method (FEM) is proposed that can be used as a design tool for improving the quality of the brake system. The finite element model used in the analysis consists of several major components; drum, shoes, lining (trailing and leading)…etc. The full finite element model was used to predict the brake system natural frequency and associated mode shape. Dynamically unstable modes are found during squeal due to friction coupling of neighboring (brake drum and brake shoes) modes. The modes will be stabilized and squeal is eliminated when these modes are decoupled. Moreover, the leading and trailing brake shoes mode shapes are independent from each other with the same frequency. Good correlation with experimental results is shown where the final results identified the major parameters associated with the brake noise and also lead to an optimal design by selecting appropriate levels of those parameters. For example, the Young's modulus of the brake drum and lining materials play an important role in the occurrence of the squeal, whereas decreasing the lining coefficient of friction lead to decrease the occurrence of squeal.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Drum Brake Squeal Analysis by Finite Element Method


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    24th Annual Brake Colloquium and Exhibition ; 2006



    Publication date :

    2006-10-08




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Drum brake squeal analysis by finite element method

    Ahmed,I. / Abdoul-Seoud,S. / Industrial Education College,Kairo,EG et al. | Automotive engineering | 2006


    Drum brake squeal

    Hultén, Johan | TIBKAT | 1998


    Drum brake squeal prediction using a parametric finite element model

    Kang,H.I. / Brooks,P.C. / Barton,D.C. et al. | Automotive engineering | 2002


    On the Analysis of Drum Brake Squeal Using Finite Element Methods Technique

    Ahmed, Ibrahim / Aboul-Seoud, Shawky | SAE Technical Papers | 2006


    Some Drum Brake Squeal Mechanisms

    Hulten, J. / Society of Automotive Engineers | British Library Conference Proceedings | 1995