期刊
出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0890060422000233
关键词
Artificial neural networks; cold rolling; dimensionality reduction; finite element analysis; machine learning
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 DR-NNs reduce the computational time and prediction uncertainty compared to a standalone neural network by using linear and nonlinear dimensionality reduction methods to reduce the input space to a smaller set of principal components.
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.
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