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An Approach for Multi-Reference Identification of Modal Parameters in Frequency Domain
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English
Abstract
A new method is introduced here to identify modal parameters by fitting curves with multiple degrees of freedom to experimental data in frequency domain. Unknown parameters in our method are natural frequencies and modal damping ratios, and, from these parameters natural modes and residual terms are determined. In comparing our method with the conventional Van Loon's method, fewer unknown parameters are dealt with, and thus computing time is shorter with better convergence of solution. Simulation results obtained show that our method is useful especially in refering to many data simultaneously.
Authors
Citation
Iwahara, M. and Nagamatsu, A., "An Approach for Multi-Reference Identification of Modal Parameters in Frequency Domain," SAE Technical Paper 951365, 1995, https://doi.org/10.4271/951365.Also In
References
- Nagamatsu, A. “Modal Analysis” Baifu-kan (in Japanese) 1985
- Loon, V. “Modal Parameters of Mechanical Structures” Katholieke Univ. Leuven 1974
- Jeong, W. Nagamatsu, A. “A New Method for Poly-Reference Identification of Modal Parameters in Modal Testing” Proc. 10th IMAC 1992 265 271
- Vold, H. Leuridan, J. 7th Seminar on Modal Analysis Katholieke Univ. Leuven 1