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http://dx.doi.org/10.7234/composres.2022.35.5.317

The PIC Bumper Beam Design Method with Machine Learning Technique  

Ham, Seokwoo (Department of Mechanical Engineering, Graduated School, Kongju National University)
Ji, Seungmin (Department of Mechanical Engineering, Graduated School, Kongju National University)
Cheon, Seong S. (Department of Mechanical Engineering, Graduated School, Kongju National University)
Publication Information
Composites Research / v.35, no.5, 2022 , pp. 317-321 More about this Journal
Abstract
In this study, the PIC design method with machine learning that automatically assigning different stacking sequences according to loading types was applied bumper beam. The input value and labels of the training data for applying machine learning were defined as coordinates and loading types of reference elements that are part of the total elements, respectively. In order to compare the 2D and 3D implementation method, which are methods of representing coordinate value, training data were generated, and machine learning models were trained with each method. The 2D implementation method is divided FE model into each face and generating learning data and training machine learning models accordingly. The 3D implementation method is training one machine learning model by generating training data from the entire finite element model. The hyperparameter were tuned to optimal values through the Bayesian algorithm, and the k-NN classification method showed the highest prediction rate and AUC-ROC among the tuned models. The 3D implementation method revealed higher performance than the 2D implementation method. The loading type data predicted through the machine learning model were mapped to the finite element model and comparatively verified through FE analysis. It was found that 3D implementation PIC bumper beam was superior to 2D implementation and uni-stacking sequence composite bumper.
Keywords
Machine Learning; Composite Materials; PIC (Piecewise Integrated Composite); Bumper Beam;
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Times Cited By KSCI : 2  (Citation Analysis)
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