Parameter identification and model updating of thin plate structure with rectangular cut based on iterative methods and optimization

2021 ◽  
Author(s):  
Gabriel Kozikoski ◽  
Henrique Silveira
Keyword(s):  
Parameter Identification ◽  
Iterative Methods ◽  
Thin Plate ◽  
Model Updating ◽  
Plate Structure

Comparison of Direct and Iterative Methods for Model Updating of a Curved Cable-stayed Bridge Using Experimental Modal Data

2016 ◽  
Vol 106 (8) ◽  
pp. 538-545 ◽  
Author(s):  
Guanzhe Fa ◽  
Enrico Mazzarolo ◽  
Leqia He ◽  
Bruno Briseghella ◽  
Luigi Fenu ◽  
...  
Keyword(s):  
Iterative Methods ◽  
Model Updating ◽  
Modal Data ◽  
Cable Stayed Bridge

scholarly journals DIRECT VERSUS ITERATIVE MODEL UPDATING METHODS FOR MASS AND STIFFNESS MATRICES

2010 ◽  
Vol 10 (02) ◽  
pp. 165-186 ◽  
Author(s):  
Y. B. YANG ◽  
Y. J. CHEN
Keyword(s):  
Iterative Method ◽  
Comparative Study ◽  
Iterative Methods ◽  
Model Updating ◽  
Measured Data ◽  
Engineering Applications ◽  
Orthogonality Constraints ◽  
Iterative Model ◽  
Numerical Studies ◽  
Stiffness Matrices

A comparative study is performed for the direct and iterative methods for updating the structural matrices based on measured data. The former was derived from the orthogonality constraints by replacing the modal vector of concern by the modal matrix in computing the correction matrices.1The iterative method used is the improved inverse eigensenstivity method.2Through the numerical studies, it was demonstrated that both methods yield good results. However, the direct updating method is found to be more suitable for engineering applications due to its ease in treating multi-modes and higher efficiency, especially for complicated structures.

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