TY  - INPR
A1  - Abbas, Tajammal
A1  - Kavrakov, Igor
A1  - Morgenthal, Guido
A1  - Lahmer, Tom
T1  - Prediction of aeroelastic response of bridge decks using artificial neural networks
N2  - The assessment of wind-induced vibrations is considered vital for the design of long-span bridges. The aim of this research is to develop a methodological framework for robust and efficient prediction strategies for complex aerodynamic phenomena using hybrid models that employ numerical analyses as well as meta-models. Here, an approach to predict motion-induced aerodynamic forces is developed using artificial neural network (ANN). The ANN is implemented in the classical formulation and trained with a comprehensive dataset which is obtained from computational fluid dynamics forced vibration simulations. The input to the ANN is the response time histories of a bridge section, whereas the output is the motion-induced forces. The developed ANN has been tested for training and test data of different cross section geometries which provide promising predictions. The prediction is also performed for an ambient response input with multiple frequencies. Moreover, the trained ANN for aerodynamic forcing is coupled with the structural model to perform fully-coupled fluid--structure interaction analysis to determine the aeroelastic instability limit. The sensitivity of the ANN parameters to the model prediction quality and the efficiency has also been highlighted. The proposed methodology has wide application in the analysis and design of long-span bridges.
KW  - Aerodynamik
KW  - Artificial neural network
KW  - Ingenieurwissenschaften
KW  - Bridge
KW  - Bridge aerodynamics
KW  - Aerodynamic derivatives
KW  - Motion-induced forces
KW  - Bridges
Y1  - 2020
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20200225-40974
N1  - This is the pre-peer reviewed version of the following article: 
https://www.sciencedirect.com/science/article/abs/pii/S0045794920300018?via%3Dihub, https://doi.org/10.1016/j.compstruc.2020.106198
ER  -