Modeling Hot Deformation of 5005 Aluminum Alloy through Locally Constrained Regression Models with Logarithmic Transformations
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Department of Electrical Engineering, Soonchunhyang University, 22 Soonchunhyang-ro, Sinchang-myeon, Asan-si 31538, Korea
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Department of Smart Automobile, Soonchunhyang University, 22 Soonchunhyang-ro, Sinchang-myeon, Asan-si 31538, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Ana M. Camacho
Appl. Sci. 2022, 12(1), 152; https://doi.org/10.3390/app12010152
Received: 30 October 2021
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Revised: 15 December 2021
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Accepted: 21 December 2021
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Published: 24 December 2021
This study presents the adoption of locally constrained regression models (LCRMs) with logarithmic transformations in order to model the flow stress behavior of the high-temperature deformation of 5005 aluminum alloy. Hot tensile tests for 5005 aluminum alloy were conducted under the temperatures of 290 °C, 360 °C, 430 °C, and 500 °C, and the strain rates of 0.0003/s, 0.003/s, and 0.03/s. The flow stress behavior was analyzed based on variations in temperature and strain rate. The flow stress during the hot deformation was modeled using the traditional Arrhenius type constitutive equation and the neural network approach. Then, for improved prediction accuracy, the flow stress was modeled using LCRMs. The prediction accuracies of the models were compared by calculating the MAE (Maximum Absolute Error) and RMSE (Root-Mean-Squared Errors) values. The MAE and RMSE of the LCRMs were lower than the errors of the Arrhenius equation and the neural network model. The results show that LCRMs can be useful in modeling the flow stress of 5005 aluminum alloy, and that the developed model can accurately predict the flow stress.
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MDPI and ACS Style
Cho, J.; Song, S.-H. Modeling Hot Deformation of 5005 Aluminum Alloy through Locally Constrained Regression Models with Logarithmic Transformations. Appl. Sci. 2022, 12, 152. https://doi.org/10.3390/app12010152
AMA Style
Cho J, Song S-H. Modeling Hot Deformation of 5005 Aluminum Alloy through Locally Constrained Regression Models with Logarithmic Transformations. Applied Sciences. 2022; 12(1):152. https://doi.org/10.3390/app12010152
Chicago/Turabian StyleCho, Jeongho, and Shin-Hyung Song. 2022. "Modeling Hot Deformation of 5005 Aluminum Alloy through Locally Constrained Regression Models with Logarithmic Transformations" Applied Sciences 12, no. 1: 152. https://doi.org/10.3390/app12010152
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