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Application of Indirect Force Estimation Techniques to the Automotive Transfer Case
Technical Paper
1999-01-1764
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In the NVH design optimization of automotive structures, the spectral properties of dynamic forces transmitted from rotating machinery to its housing is of primary interest. This paper describes the application of an indirect dynamic force estimation technique, more commonly known as transfer path analysis, to an operational transfer case.
Through the implementation of an inverse transfer matrix technique, dynamic forces transmitted to a transfer case housing are estimated at a discrete number of locations. This paper describes the experimental and analytical methodology employed for dynamic force estimation as well as statistical techniques for solution optimization.
Good correlation is shown to exist between frequencies of known physical phenomena and estimated dynamic forces for a total of nine (9) operational variations of transfer case speed and torque. In addition, comparison of measured operational acceleration response to acceleration response derived from estimated forces demonstrates moderate certainty in force estimations.
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Authors
Citation
Kurmaniak, C., Van Karsen, C., and Kelley, W., "Application of Indirect Force Estimation Techniques to the Automotive Transfer Case," SAE Technical Paper 1999-01-1764, 1999, https://doi.org/10.4271/1999-01-1764.Also In
References
- Kurmaniak, C. V. “Application of Dynamic Source Identification to the Automotive Transfer Case” Masters Thesis Michigan Technological University Houghton, MI 1998
- Avitabile, P. Piergentili, F. Lown, K. “Generation of Input Forcing Functions Through the Use of Measured Response and System Transfer Relations.” Proceedings of 17 th International Modal Analysis Conference Feb 8-12 Orlando, FL 1998
- Elliot, K.B. Juang, J.N. Robinson, J. “Force Prediction Using Singular-Value Decomposition,” Proceedings of the 6th International Modal Analysis Conference 1582 1588 1988 Kissimmee, Florida
- Bell, R.G. Rodeman, R. “External Force Estimation from Transient Response Data,” Proceedings of the 6th International Modal Analysis Conference 1988 Kissimmee, Florida
- Goldberg, J. L. Matrix Theory With Applications 1991 New York McGraw-Hill
- Blough, J. Gwaltney, G. Van Karsen, C. NVH Source Path and Receiver Modeling Symposium Society for Experimental Mechanics October 26 - 27 1998 Novi, MI