Finite element model updating of a simply supported skewed PSC I-girder bridge using Hybrid Genetic Algorithm

2013 ◽  
Vol 17 (3) ◽  
pp. 518-529 ◽  
Author(s):  
Dae-Sung Jung ◽  
Chul-Young Kim
Keyword(s):  
Genetic Algorithm ◽  
Finite Element ◽  
Finite Element Model ◽  
Model Updating ◽  
Hybrid Genetic Algorithm ◽  
Element Model ◽  
Finite Element Model Updating ◽  
Simply Supported ◽  
Girder Bridge

Finite Element Model Updating for Unsymmetrical Damping System with Genetic Algorithm

2012 ◽  
Vol 166-169 ◽  
pp. 2999-3003 ◽  
Author(s):  
Bao Qiang Zhang ◽  
Guo Ping Chen ◽  
Qin Tao Guo
Keyword(s):  
Genetic Algorithm ◽  
Finite Element ◽  
Finite Element Model ◽  
Model Updating ◽  
Element Model ◽  
Maximum Error ◽  
Optimization Method ◽  
Finite Element Model Updating ◽  
Modal Data ◽  
Complex Modal

Finite element model updating using incomplete complex modal data for unsymmetrical damping system with genetic algorithm is presented. The genetic algorithm method and finite element model updating based on optimization method using complex modal eigenvalue are introduced. The updating for simulation example about a flexible rotor system which is a typical unsymmetrical damping system is performed using bearing stiffness, bearing damping and diameter moment of inertia parameters. The results show that the maximum error of updated parameters is 0.15% and the objective function of genetic algorithm is 0.0081. The study demonstrates that the finite element model updating method using incomplete complex modal data with genetic algorithm is feasible and effective for unsymmetrical damping system.

Finite Element Model Updating of Existing T-Girder Bridge by Field Quasi-Static Generalized Influence Line

2012 ◽  
Vol 226-228 ◽  
pp. 1609-1613 ◽  
Author(s):  
Jing Bo Liao ◽  
Guang Wu Tang ◽  
Fei Pan
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Structural Damage ◽  
Model Updating ◽  
Element Model ◽  
Finite Element Model Updating ◽  
Element Analysis ◽  
Influence Line ◽  
Girder Bridge ◽  
The Finite Element Model

Finite element model updating is the important foundation of structural damage detection, condition assessment for engineering structure. A new method, for finite element model updating based on the quasi-static generalized influence line (QSGIL) residual objection, is presented to update the finite element model of beam-structure in order to improve the quality and precision of finite element analysis. Both of the theory and model experimental study show that the proposal method can efficiently update the finite element model in the previous study [1]. In this paper, the updating techniques are further developed to update the finite element model of the existing T-Girder bridge, the QSGIL of the updating model agrees very well with the field QSGIL of the existing bridge, which illustrates that the proposal methodology is promising in the practical bridge structure and other structures.

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