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Development of Input Loads for Road Noise Analysis
Technical Paper
2003-01-1608
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
To predict structure-borne interior noise using CAE simulation, it is important to establish a model for both the noise and vibration transfer path, as well as the excitation source. In the passenger vehicle, powertrain and road induced loads are major input sources for NVH. This paper describes a process to simulate the structure-borne road noise to 150Hz. A measured road surface is used for input for the simulation. Road surface data, in the form of height vs. distance, is converted to enforced motions at the tire patch in the frequency domain for input to the vehicle system model. The input loads are validated by the comparison of wheel hub excursions. The ability of the CAE simulation model to predict interior acoustic responses is shown by the comparison of the simulation results with measured vehicle interior responses.
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Lee, J., Suh, J., Jeong, S., Kandarpa, S. et al., "Development of Input Loads for Road Noise Analysis," SAE Technical Paper 2003-01-1608, 2003, https://doi.org/10.4271/2003-01-1608.Also In
SAE 2003 Transactions Journal of Passenger Cars - Mechanical Systems
Number: V112-6; Published: 2004-09-15
Number: V112-6; Published: 2004-09-15
References
- Bryan, M. E. “A Tentative Criterion for Acceptable Noise Levels in Passenger Vehicles” Journal of Sound and Vibration 48 4 525 535 1976
- Duncan, A. E. Wolf, W. L. Su, F. C. “Understanding NVH Basics” International Body Engineering Conference (IBEC) Proceedings 1996
- Wong, J. Y. Theory of Ground Vehicles John Wiley & Sons 1993