Evaluation of Damping Material at Higher Frequencies with Application to Automotive Systems Including Brakes 951243
Many discrete tonal type noise and vibration problems in automotive systems and other physical structures require passive multi-layer visco-elastic damping treatments in mid to high frequency regimes. To address such issues, experimental modal analysis and dynamic finite element methods are suggested as suitable tools. Results are presented in terms of several test structures (four thin elastic beams, a thick elastic plate and an automotive brake pad) with free-free boundary conditions. Composite modal loss factors are measured and predicted for two different damping insulators consisting of adhesive, steel and coating combinations. Special attention is paid to the elastic deformation modes of test structures and spectral scaling of material properties for the finite element models.
Citation: Singh, R., Kung, S., Sheikh, A., Mitchell, M. et al., "Evaluation of Damping Material at Higher Frequencies with Application to Automotive Systems Including Brakes," SAE Technical Paper 951243, 1995, https://doi.org/10.4271/951243. Download Citation
Rajendra Singh, Shih-Wei Kung, Ayaz Sheikh, Michael Mitchell, Uma Nandi, Michael Ransdell
The Ohio State Univ., Eagle-Picher Automotive
SAE Noise and Vibration Conference and Exposition
Proceedings of the 1995 Noise and Vibration Conference-P-291