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The Influence of Structural Mobility on Truck Interior Noise
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English
Abstract
A digital signal processing method is employed to generate mobility functions and acoustic transfer functions. The acoustic transfer function is defined as the sound pressure level per unit force at the cab mount. Peaks in the driving point mobility function) measured at the cab mount locations, correlate with peaks in the acoustic transfer function. These functions were evaluated in the frequency range 50–1000 Hz where truck interior noise is strongly influenced by structural vibration. Reducing the mobility leads to a reduction in the acoustic transfer function. A method for evaluating bracket structural changes was determined and some general design guidelines established for the reduction of truck interior noise.
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Citation
Tecco, T., "The Influence of Structural Mobility on Truck Interior Noise," SAE Technical Paper 821283, 1982, https://doi.org/10.4271/821283.Also In
References
- Joachim, C. A. Nefske, D. J. Wolfe, J. A. Jr., “Application of a Structural Acoustic Diagnostic Technique to Reduce Boom Noise in a Passenger Vehicle.” SAE Technical Paper 810398 1981
- Friundi, F. “Optimization of Truck and Bus Soundproofing.” Paper presented at 4th Unikeller Conference 1975