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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 858Elastic-Plastic Time History Analysis of MR...

Elastic-Plastic Time History Analysis of MR Damping Structure Based on LQG Algorithm

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Abstract:

This paper discussed an elastic-plastic time-history analysis on a structure with MR dampers based on member model, in which the elastoplastic member of the structure is assumed to be single component model and simulated by threefold line stiffness retrograde model. In order to obtain better control effect, Linear Quadratic Gaussian (LQG) control algorithm is used to calculate the optimal control force, and Hrovat boundary optimal control strategy is used to describe the adjustable damping force range of MR damper. The effectiveness of the MR damper based on LQG algorithm to control the response of the structure was investigated. The results from numerical simulations demonstrate that LQG algorithm can effectively improve the response of the structure against seismic excitations only with acceleration feedback.

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Periodical:

Applied Mechanics and Materials (Volume 858)

Pages:

145-150

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.858.145

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Online since:

November 2016

Authors:

Yu Liang Zhao, Zhao Dong Xu*

Keywords:

Elastic-Plastic Analysis, LQG, MR Damper, Single Component Model

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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