The traditional analysis of squeal noise for drum brakes is done in a separate approach, with CAE and laboratory/experimental techniques done independently or in a non-iterative sequential manner. In this paper, an innovative approach of directing the frequency response testing based on CAE is used and the overall process is embedded in a system approach. The drum brake design was changed to accomplish higher loads in a car. The initial results of the tests came out noise during the vehicle test. After retrieving the noisy parts from the vehicle, it was tested for frequency response, but in a directional manner suggested by the CAE model. This new approach hasn't been done before in industry practice. The CAE identified that two modes (around the noise frequency) swapped their orders compared to the old design and suggested design changes. The new design was evaluated with a mocked up prototype. This was followed by getting cast parts and testing them for frequency response. Eventually rig tests and vehicle tests followed, which proved that the new proposal fixed squeal problems.


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    Title :

    A Systems Approach to Eliminating Squeal in a Drum Brake


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    26th Brake Colloquium and Exhibition ; 2008



    Publication date :

    2008-10-12




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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