Structural Physical Parameter Identification of Nonlinear Parametric System in Time Domain

Abstract:

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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.

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Periodical:

Edited by:

Xuejun Zhou

Pages:

1040-1043

DOI:

10.4028/www.scientific.net/AMM.94-96.1040

Citation:

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

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$38.00

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