Eventos Anais de eventos
DINAME 2023
XIX International Symposium on Dynamic Problems of Mechanics
Parameter Identification of Bouc-Wen Model for MR Damper
Submission Author:
Davi Matias Dutra Silva , DF
Co-Authors:
Davi Matias Dutra Silva, Marcus Vinicius Girão de Morais, Suzana Avila
Presenter: Davi Matias Dutra Silva
doi://10.26678/ABCM.DINAME2023.DIN2023-0119
Abstract
The non-linear behavior of the MR damper was modelled using the generalized model of Bouc-Wen. The work methodology of this work was divided into three parts. Three control strategies as a function of the applied current, excitation frequency and displacement amplitude. The model parameter is validated using experimental measured values and modified predict values. The approach for the nonlinear dynamic model of Bouc-Wen was obtained using a method to find and fit optimal values locally. The method of nonlinear optimization of multidimensional variables adopted was the fminsearch. It finds the local minimum of the function of 16 variables, starting at an initial estimate value. In order to provide optimal values, the displacement function was also optimized using the same method. With the aim of find the local minimum of the sinusoidal displacement. The error minimization is done using fminsearch algorithm, the error is a second order function that minimizes the sum of the squared deviations of the scores.
Keywords
Bouc-Wen, Fminsearch, Mr damper
