Publisher : The Korean Society of Mechanical Engineers
DOI : 10.22634/KSME-A.19188.8.131.528
Title & Authors
A Comparative Study of Material Flow Stress Modeling by Artificial Neural Networks and Statistical Methods Chun, Myung-Sik; Yi, Joon-Jeong; Jalal, B.; Lenard, J.G.;
The knowledge of material stress-strain behavior is an essential requirement for design and analysis of deformation processes. Empirical stress-strain relationship and constitutive equations describing material behavior during deformation are being widely used, despite suffering some drawbacks in terms of ease of development, accuracy and speed. In the present study, back-propagation neural networks are used to model and predict the flow stresses of a HSLA steel under conditions of constant strain, strain rate and temperature. The performance of the network model is comparedto those of statistical models on rate equations. Well-trained network model provides fast and accurate results, making it superior to statistical models.