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Evaluation of plates in similitude by experimental tests and artificial neural networks

In the last century, the introduction of similitude theory allowed engineers to define the conditions to design a scaled-up or down version of the full-scale structure by means of a set of tools known as similitude methods: the scaled structure can be tested more easily, and then, by using the scali...

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Published in:Proceedings of the Institution of Mechanical Engineers. Part C, Journal of mechanical engineering science Journal of mechanical engineering science, 2022-01, Vol.236 (2), p.852-872
Main Authors: Casaburo, Alessandro, Petrone, Giuseppe, Meruane, Viviana, Franco, Francesco, Rosa, Sergio De
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container_title Proceedings of the Institution of Mechanical Engineers. Part C, Journal of mechanical engineering science
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description In the last century, the introduction of similitude theory allowed engineers to define the conditions to design a scaled-up or down version of the full-scale structure by means of a set of tools known as similitude methods: the scaled structure can be tested more easily, and then, by using the scaling laws, the prototype behavior can be recovered. However, such a response reconstruction may become hard for complex structure under incomplete or distorted similitude frameworks. Machine learning methods, with their automating characteristics, may help to circumvent these difficulties. This work is divided into two parts. First, five clamped-free-clamped-free plates in similitude are experimentally tested. In the case of complete similitude, these laws allow to accurately reconstruct the response. When the similitude is distorted, these laws are not always valid, failing to predict the dynamic behavior in some of the frequency ranges. Then, the experimental results are used to validate the prediction and identification capabilities of artificial neural networks. The artificial neural networks proved to be robust to noise and very helpful in predicting the response characteristics and identifying the model type, although an adequate number of training examples is needed. Further tests proved that the number of samples is drastically reduced by choosing accurately the features.
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source Sage Journals Online; IMechE Titles Via Sage
subjects Artificial neural networks
Clamping
Frequency ranges
Machine learning
Neural networks
Noise prediction
Plates
Scaling laws
title Evaluation of plates in similitude by experimental tests and artificial neural networks
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