Techniques have been developed to model friction induced vibration and these were applied to the brake moan of a vehicle. A vehicle system model and the MSC/NASTRAN solutions for geometric nonlinear and complex modes were modified by DMAP for friction input. To assess stability, a position of steady sliding equilibrium was found. Then a complex modes solution was done to find negatively damped modes. Mode shape animation of all the unstable modes showed that there was a 90° out of phase vibration. This produced a design modification on a test vehicle which stabilized the vibration and eliminated brake moan.
Friction Induced Vibration: Brake Moan
Sae Technical Papers
International Conference On Vehicle Structural Mechanics & Cae ; 1995
1995-04-01
Conference paper
English
Friction Induced Vibration: Brake Moan
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