Structural Physical Parameter Identification of Nonlinear Parametric System in Time Domain


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The modified Levenberg-Marquardt (mLM) method is introduced for nonlinear parametric system, such as stiffness proportional damping and Rayleigh proportional damping. Since the mLM method is sensitive to the initial values of parameter, a SVD-mLM method is proposed with combination of singular value decomposition (SVD). Parameter identification of five-storey shear-type is simulated with incomplete output. The results show that the identified parameters have high precision, and the proposed method is effective and robust on noise.



Edited by:

Xuejun Zhou






X. J. Wang and J. Cui, "Structural Physical Parameter Identification of Nonlinear Parametric System in Time Domain", Applied Mechanics and Materials, Vols. 94-96, pp. 1040-1043, 2011

Online since:

September 2011




[1] P. Caravani, M.L. Watson, W.T. Thomson: Journal of Applied Mechanics (1977), p.135.

[2] K. Toki, T. Sato, J. Kiyono: Structural Eng. & Earthquake Eng., Vol. 6 (2, 1989), p.243.

[3] J.Q. Shang: Earthquake Eng. & Eng. Vibration, Vol. 11 (2, 1991), p.62. (in Chinese).

[4] D. Wang, A. Haldar: Journal of Engineering Mechanics, Vol. 120(1, 1994), p.159.

[5] J. Chen, J. Li: Earthquake Eng. & Eng. Vibration, Vol. 18(4, 1998), p.40. (in Chinese).

[6] X.J. Wang, J. Cui: Earthquake Eng. & Eng. Vibration, Vol. 28(1, 2008), p.44. (in Chinese).

[7] X.J. Wang, J. Cui, in: The 14th WCEE (2008, 05-01-0051), Beijing, China.

[8] T. Saito, H. Yokota: Wind Engineering and Industrial Aerodynamics, Vol. 59(1996), p.299.

[9] Compaq Computer Corporation, in: Nonlinear Least Squares / IMSL Math/Library Volumes 1 and 2, Compaq Visual Fortran 6, IMSL Fortran 90 MP Library help.

[10] Y. Osaki, translated by Q. Tian, in: Introduction to spectral analysis of ground motion (2nd edition), edited by Earthquake Press, Beijing, China (2008). (in Chinese).

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