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SEA Model Building of Automotive Vehicle Body in White Using Experiment and FEM
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 05, 2003 by SAE International in United States
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Many papers have published techniques for estimating SEA parameters using Finite Element Methods (FEM). We have also developed a technique for virtual prototyping of an automotive vehicle body using FEM. In our technique, FEM models are used to derive parameters for an SEA model. The technique does not require a FEM model of the whole system, but uses extracted FEM models that include subsystems sharing a single junction. The subsystem energies and power inputs are calculated by frequency response analysis in FEM. The determination of loss factors is based on the Power Injection Method (PIM). The objective of this work is the construction of an SEA model of a passenger car body-in-white. The model has only structural subsystems.
In order to develop a model with high accuracy, the subdivision of the tested body-in-white is first evaluated using the Initial Slope Ratio (ISR) indicator that shows the coupling strength between subsystems. Based on the ISR indicators, the body-in-white is divided into 38 structural subsystems. The calculations of extracted FEM models for damping and coupling loss factors construct an SEA model of the test car body-in-white.
The constructed model is used to predict the subsystem energy levels. It is shown that the results are in good agreement with the measured levels from shaker tests and the full FEM analysis results of the whole car body-in-white for every SEA subsystem. And, the technique using FEM is applied to predict the subsystem energy change due to structural change in order to test the effectiveness of the constructed models. It is shown that we can predict the energy changes with high accuracy.
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CitationNishikawa, K., Misaji, K., Yamazaki, T., and Kamata, M., "SEA Model Building of Automotive Vehicle Body in White Using Experiment and FEM," SAE Technical Paper 2003-01-1411, 2003, https://doi.org/10.4271/2003-01-1411.
SAE 2003 Transactions Journal of Passenger Cars - Mechanical Systems
Number: V112-6; Published: 2004-09-15
Number: V112-6; Published: 2004-09-15
- Lyon R.H. Statistical Energy Analysis of Dynamical Systems Theory and Applications MIT Press 1975
- Dong B. Green M. Voutyras M. Bremner P. Kasper P. Road Noise Modeling Using Statistical Energy Analysis Method SAE Paper 951327 761 766 1995
- Chen H. O'Keefe M. Bremner P. A Comparison of Test-Based and Analytic SEA Models for Vibro--Acoustics of a Light Truck SAE Paper 951329 777 784 1995
- Simmons C. Structure-Borne Sound Transmission Thorough Plate Junctions and Estimates of SEA Coupling Loss Factors Using The Finite Element Method Journal of Sound and Vibration 144 2 215 227 1991
- Proceedings of NOVEM2000 held at Lyon 2000
- Yan H.H. Parrett A. Caluculation of Statistical Energy Analysis Parameters Using Finite Element Analysis Proceedings of inter-noise 2002 2002
- KAMATA M. YAMAZAKI T. KUROSAWA K. OHNO S New Procedure of Vibration Analysis Using Statistical Energy Analysis: Case of Box-like Structure Proceedings of Fifth International Congress on Sound and Vibration in Adelaide 4 2305 2312 1997
- YAMAZAKI T. KAMATA M. OHNO S. Construction of SEA Models Using FEA Software Proceedings of novem 2000 2000-9
- YAMAZAKI T. KAMATA M. OHNO S. Two approaches for Estimation of Internal and Coupling Loss Factors Using FEM Proceedings of Inter-Noise 2002 316 2002-8
- Gardhagen B. Plunt J. Variation of Vehicle NVH Properties due to Component Eigenfrequency Shifting - Basic Limits of Predictability SAE 951302
- Yap F.F. Woodhouse J. Investigation of Damping Effects on Statistical Energy Analysis of Coupled Structures Journal of Sound and Vibration 197 3 351 371 1996
- YAMAZAKI T. KAMATA M. OHNO S. Study on Subdivision in Statistical Energy Analysis Proceedings of 8th International Congress on Sound and Vibration in Hong-Kong 2327 2334 2001-7
- MORI T. NAKANO M. YAMAZAKI T. KAMATA M. Experimental SEA Application for Mid to High Frequency Vibration Analysis on SUV Proceedings of NOVEM 2000 2000-9