This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Dual Input Estimation of Frequency Response Functions for Automotive Structures
Annotation ability available
Sector:
Language:
English
Abstract
The accurate measurement of the frequency response function is vital to the estimation of the system modal parameters. The use of the single input/output theory to formulate the equations for the frequency response function can be replaced by an equivalent theory involving multiple inputs. The results of this approach provide frequency response functions that are comparable to the single input/output case but with a reduction in the time required per measurement and an increase in the consistency of modal frequency and damping values estimated from different frequency response functions. Examples are included for representative automotive structures.
Authors
Citation
Allemang, R., Rost, R., and Brown, D., "Dual Input Estimation of Frequency Response Functions for Automotive Structures," SAE Technical Paper 820193, 1982, https://doi.org/10.4271/820193.Also In
References
- Bendat, J.S. Piersol, A.G. ‘Random Data: Analysis and Measurement Procedures’ John Wiley and Sons, Inc. 1971 407
- Otnes, R.K. Enochson, L. ‘Digital Time Series Analysis’ John Wiley and Sons, Inc. 1972 467
- Potter, R. W. ‘Matrix Formulation of Multiple and Partial Coherence’ Journal of the Acoustic Society of America 66 3 1977 776 781
- Dodds, C.J. Robson, J.D. ‘Partial Coherence in Multivariate Random Processes’ Journal of Sound and Vibration 42 2 1975 243 249
- Bendat, J.S. ‘Solutions for the Multiple Input/Output Problem’ Journal of Sound and Vibration 44 3 1976 311 325
- Piersol, A.G. ‘Physical Applications of Correlation and Coherence Function Analysis’ Journal of Acoustical Society of America 55 2 1975 29
- Akaike, H. ‘On the Statistic Estimation of the Frequency Response Function of a System Having Multiple Inputs’ Annals of the Institute of Statistical Mathmatics 17 2 1965
- Allemang, R. J. ‘Investigation of Some Multiple Input/Output Frequency Response Function Experimental Modal Analysis Techniques’ Doctor of Philosophy Dissertation University of Cincinnati Department of Mechanical Engineering 1980 358