Numerical implementation of EPR-based material models in finite element analysis

Faramarzi, Asaad; Javadi, Akbar A.; Ahangar-Asr, Alireza

Abstract

In this paper a novel approach based on evolutionary polynomial regression (EPR) is presented to develop constitutive models of materials. Stress–strain data are used to train EPR and develop EPR-based material models. It is shown that it is possible to construct the material stiffness (Jacobian) matrix using partial derivatives of the developed EPR models. The EPR-based Jacobian matrix is implemented in finite element (FE) model and two boundary value problems are used to verify the proposed EPR-based FE methodology. It is shown that the EPR-FE model can be successfully employed to analyse structural problems with both linear and non-linear material behaviour.

Citation

Faramarzi, A., Javadi, A. A., & Ahangar-Asr, A. (2013). Numerical implementation of EPR-based material models in finite element analysis. Computers and Structures, 118, 100-108. https://doi.org/10.1016/j.compstruc.2012.10.002

• Journal Article Type: Article
• Online Publication Date: Nov 9, 2012
• Publication Date: 2013-03
• Deposit Date: Aug 1, 2023
• Journal: Computers and Structures
• Print ISSN: 0045-7949
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 118
• Pages: 100-108
• DOI: https://doi.org/10.1016/j.compstruc.2012.10.002