Bridge Finite Element Model Updating Based on Uniform Design and Response Surface Method

2013 ◽  
Vol 838-841 ◽  
pp. 1118-1121
Author(s):  
Zhao Xia Wu ◽  
Xue Shuang Fan ◽  
Yuan Long Shao ◽  
Li Peng Hu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Response Surface ◽  
Model Updating ◽  
Uniform Design ◽  
Element Model ◽  
Load Test ◽  
Finite Element Model Updating ◽  
Static Load Test ◽  
Surface Method

An accurate finite element model is a necessity for analyzing the bridge's health status. The uniform design combined with response surface finite element model updating method is proposed in this paper. The error of data obtained from updating model is less than 3% by contrasting static load test data in Shihe Bridge.The result shows that the updating model has a good fit with the actual bridge.

Static Finite Element Model Updating for Special-Shaped Bridge Based on Response Surface Method

2012 ◽  
Vol 236-237 ◽  
pp. 611-616
Author(s):  
Han Bing Liu ◽  
Yan Jun Song ◽  
Ya Feng Gong
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Response Surface ◽  
Response Surface Method ◽  
Model Updating ◽  
Design Method ◽  
Uniform Design ◽  
Element Model ◽  
Finite Element Software ◽  
Surface Method

The establishment of an effective finite element model for bridge structure is essential in the health monitoring system for Bridge. A new updating method for static model using response surface method is proposed in this paper, and the main procedures are given with an example of a special-shaped bridge. Firstly, the bridge deflection and strain data in designed load case are obtained. Several groups of combined parameters which are chosen based on the principle of uniform design method are selected to conduct calculation through finite element software. Finally through response surface fitting and optimization, the updated bridge finite element model is obtained. The results show that the updated model is approximate to the real bridge and this updating method is rational and practical.

Finite element model updating of a satellite honeycomb sandwich plate in structural dynamics

2021 ◽  
pp. 095605992110016
Author(s):  
Ali Aborehab ◽  
Mohamed Kamel ◽  
Ahmed Farid Nemnem ◽  
Mohammed Kassem
Keyword(s):  
Finite Element ◽  
Design Of Experiments ◽  
Finite Element Model ◽  
Response Surface ◽  
Sandwich Plate ◽  
Model Updating ◽  
Element Model ◽  
Finite Element Model Updating ◽  
Surface Method ◽  
Honeycomb Sandwich

The honeycomb sandwich structures have a crucial participation in aerospace industry, especially in the design of satellite structures due to their exceptional mechanical properties. The equivalent finite element modeling of such structures is initially presented through the implementation of modal analysis via the three-layered sandwich theory. Subsequently, the computational results are validated by carrying out an experimental modal testing. In addition, sensitivity analysis based upon design of experiments and parameters correlation, is executed for the sake of selecting the most appropriate design parameters for the optimization problem. Finally, finite element model updating of a honeycomb sandwich plate is thoroughly introduced using three optimization algorithms including genetic algorithms, adaptive-multiple optimization, and response surface method. A good agreement between the previously-mentioned optimization algorithms is obtained. Meanwhile, response surface method and its related design of experiments tool succeed in avoiding such time-consuming process and reduce the involved computational expense with an acceptable accuracy.

Structure Statics Finite Element Model Updating Based on Response Surface Methodology

2011 ◽  
Vol 255-260 ◽  
pp. 1939-1943 ◽  
Author(s):  
Miao Yi Deng ◽  
Guang Hui Li
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Response Surface ◽  
Model Updating ◽  
Structural Parameters ◽  
Optimization Procedure ◽  
Element Model ◽  
Surface Model ◽  
Model Parameters ◽  
Finite Element Model Updating

Employing response surface method, the complicated implicit relationship between bridge structural static-load responses and structural parameters is approximately represented by the simple explicit function. Based on this response surface model (function), the structural finite element model parameters can be easily updated by selected optimization procedure. By a numerical example of a two-span continuous beam, the essential theory and implementation of structural static response surface based finite element model updating are presented in the paper.

Finite-element model updating of the traditional beam–column joint in Tibetan heritage buildings using uniform design

2020 ◽  
Vol 23 (9) ◽  
pp. 1890-1901
Author(s):  
Lu Dai
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Model Updating ◽  
Uniform Design ◽  
Element Model ◽  
Simplified Model ◽  
Finite Element Model Updating ◽  
Solid Model ◽  
Heritage Buildings ◽  
The Finite Element Model

The Que-Ti joint is the traditional beam–column connection in Tibetan heritage buildings and plays an important role in bearing and transferring load. The structure of the Que-Ti joint is very complicated, which makes it very difficult to build a refined solid model during the numerical simulation process. This means that a simplified model of the Que-Ti joint is required. In this article, we propose a finite-element model updating technique based on uniform design and apply this to the finite-element model updating of the Que-Ti joint. A simplified model of the joint was simulated using two uncertain parameters, and by constructing the uniform design matrix, the specific size of each component within the simplified model was then determined. The stress state of the simplified model was compared to the refined solid model, with results indicating that the stress and strain response of the simplified model had a small rate of error when compared with the refined solid model, which confirmed that the finite-element model updating based on the uniform design was effective and that the simplified model of the Que-Ti joint could be applied to the analysis of the structure as whole. A field measurement was also conducted to further verify the numerical simulation. This investigation provides essential information for the structural analysis of Tibetan heritage buildings.

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