Development of Noise and Vibration Prediction Software in Medium-to-High Frequency Ranges Using Power Flow Boundary Element Method 2003-01-1458
In this paper, Power Flow Boundary Element Method (PFBEM) is studied as a new tool of the noise and vibration analysis in medium-to-high frequency ranges, and the noise and vibration prediction software using this method is developed. The developed prediction system includes both direct and indirect approaches, and also offers the various functions like baffled condition, absorption boundary condition and so forth. To verify the accuracy, the developed prediction system is applied to the prediction of the vibration energy distributions in simple beams and thin plates, and the results are compared with the exact solutions of Power Flow Analysis (PFA). As practical examples, car cabins surrounded by the materials of different absorption coefficients are modeled and the distributions of smoothed acoustical energy density are successfully predicted.
Citation: Lee, H., Park, D., and Hong, S., "Development of Noise and Vibration Prediction Software in Medium-to-High Frequency Ranges Using Power Flow Boundary Element Method," SAE Technical Paper 2003-01-1458, 2003, https://doi.org/10.4271/2003-01-1458. Download Citation
Ho-Won Lee, Do-Hyun Park, Suk-Yoon Hong
Department of Naval Architecture and Ocean Engineering, Seoul National University
SAE 2003 Noise & Vibration Conference and Exhibition
SAE 2003 Transactions Journal of Passenger Cars - Mechanical Systems-V112-6