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- W2376470823 abstract "A new method is proposed to simultaneously identify structural physical parameters and support excitation from several structural dynamic responses under unknown support excitation.The support excitation on structures is represented by using orthogonal polynomial approximation,and the sensitivity of structural dynamic response with respect to structural physical parameters and orthogonal coefficients is derived.Weighted functions are adopted to overcome the ill condition of sensitivity matrix caused by the different magnitude scales of sensitivity vectors for different identified parameters.The identification equation is set up and is solved with the damped least-squares method in an iterative process to simultaneously identify structural parameters and support excitation.A twelve-story frame is taken as an example for validating the proposed method.Research results show that the proposed method can accurately identify structural physical parameters and unknown support excitation from only several responses of structures." @default.
- W2376470823 created "2016-06-24" @default.
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- W2376470823 date "2010-01-01" @default.
- W2376470823 modified "2023-09-23" @default.
- W2376470823 title "Simultaneous identification of structural parameters and support excitation from responses on limited degrees of freedom" @default.
- W2376470823 hasPublicationYear "2010" @default.
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