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SEA in Vehicle Development Part I: Balancing of Path Contribution for Multiple Operating Conditions
Technical Paper
2003-01-1546
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The application of Statistical Energy Analysis (SEA) to vehicle development is discussed, with a new technique to implement noise path analysis within a SEA model to enable efficient solution and optimization of acoustic trim. A whole vehicle Performance-Based SEA model is used, in which Sound Transmission Loss (STL) and acoustic absorption coefficient characterize subsystem performance. In such a model, the net contribution from each body panel/path, such as the floor, to a specific interior subsystem, such as the driver's head space, is extremely important for vehicle interior noise development. First, it helps to identify the critical path to root-cause potential problems. Second, it is necessary in order to perform balancing of path contributions. With current software, the power based noise contribution analysis is for direct paths/adjacent subsystems. Noise path balancing requires the net contribution from each body panel for a given load case or excitation (tire/road noise or powertrain noise). A method to calculate and balance the net panel noise contributions under several operating conditions is discussed.
Authors
Citation
Parrett, A., Zhang, Q., Wang, C., and He, H., "SEA in Vehicle Development Part I: Balancing of Path Contribution for Multiple Operating Conditions," SAE Technical Paper 2003-01-1546, 2003, https://doi.org/10.4271/2003-01-1546.Also In
References
- Lyon R.H. DeJong R.G. Theory and Application of Statistical Energy Analysis Butterworth-Heinemann 1995
- Vibro-Acoustic Sciences AutoSEA 2 User's Manual 2002
- Vibro-Acoustic Sciences AutoSEA 2 Quick Script User's Guide 2002
- Zhang Qijun Parrett Alan Hammelef David He Hua Optimization on a statistical energy analysis model using iSight InterNoise'02 Detroit, Michigan, USA