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Smart Structures and Systems Volume 13, Number 1, January 2014 , pages 81-98 DOI: https://doi.org/10.12989/sss.2014.13.1.081 |
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Predicting the buckling load of smart multilayer columns using soft computing tools |
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Yaser Shahbazi, Ehsan Delavari and Mohammad Reza Chenaghlou
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| Abstract | ||
| This paper presents the elastic buckling of smart lightweight column structures integrated with a pair of surface piezoelectric layers using artificial intelligence. The finite element modeling of Smart lightweight columns is found using ANSYS(R) software. Then, the first buckling load of the structure is calculated using eigenvalue buckling analysis. To determine the accuracy of the present finite element analysis, a compression study is carried out with literature. Later, parametric studies for length variations, width, and thickness of the elastic core and of the piezoelectric outer layers are performed and the associated buckling load data sets for artificial intelligence are gathered. Finally, the application of soft computing-based methods including artificial neural network (ANN), fuzzy inference system (FIS), and adaptive neuro fuzzy inference system (ANFIS) were carried out. A comparative study is then made between the mentioned soft computing methods and the performance of the models is evaluated using statistic measurements. The comparison of the results reveal that, the ANFIS model with Gaussian membership function provides high accuracy on the prediction of the buckling load in smart lightweight columns, providing better predictions compared to other methods. However, the results obtained from the ANN model using the feed-forward algorithm are also accurate and reliable. | ||
| Key Words | ||
| smart columns; buckling load; artificial neural network; fuzzy inference system; adaptive neuro fuzzy inference system; ANSYS | ||
| Address | ||
| Yaser Shahbazi:Architecture and Urbanism Department, Tabriz Islamic Art University, Tabriz, Iran Ehsan Delavari and Mohammad Reza Chenaghlou:Department of Civil Engineering, Sahand University of Technology, Tabriz, Iran | ||