Neural networks with dimensionality reduction for predicting temperature change due to plastic deformation in a cold rolling simulation. (6th January 2023)

• Record Type: Journal Article
• Authors: Hou, Chun Kit Jeffery; Behdinan, Kamran
• Is Part Of: AI EDAM. Volume 37(2023)
• Publication Date: 2023-01-06
• Subjects: Artificial neural networks -- cold rolling -- dimensionality reduction -- finite element analysis -- machine learning; Engineering design -- Data processing -- Periodicals; Artificial intelligence -- Periodicals; Expert systems (Computer science) -- Periodicals; 620.00420285
• DOI: 10.1017/S0890060422000233
• Languages: English
• ISSNs: 0890-0604

Abstract

Abstract: Cold rolling involves large deformation of the workpiece leading to temperature increase due to plastic deformation. This process is highly nonlinear and leads to large computation times to fully model the process. This paper describes the use of dimension-reduced neural networks (DR-NNs) for predicting temperature changes due to plastic deformation in a two-stage cold rolling process. The main objective of these models is to reduce computational demand, error, and uncertainty in predictions. Material properties, feed velocity, sheet dimensions, and friction models are introduced as inputs for the dimensionality reduction. Different linear and nonlinear dimensionality reduction methods reduce the input space to a smaller set of principal components. The principal components are fed as inputs to the neural networks for predicting the output temperature change. The DR-NNs are compared against a standalone neural network and show improvements in terms of lower computational time and prediction uncertainty.