Numerical implementation of EPR-based material models in finite element analysis
作者： Asaad Faramarzi , Akbar A. Javadi , Alireza Ahangar-Asr
DOI: 10.1016/J.COMPSTRUC.2012.10.002
关键词: Applied mathematics 、 Finite element method 、 Stiffness 、 Stiffness matrix 、 Constitutive equation 、 Matrix (mathematics) 、 Boundary value problem 、 Engineering 、 Structural engineering 、 Partial derivative 、 Jacobian matrix and determinant
摘要: 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 train EPR and EPR-based material models. It shown that it possible construct the stiffness (Jacobian) matrix using partial derivatives developed The Jacobian implemented in finite element (FE) model two boundary value problems verify proposed FE methodology. EPR-FE can be successfully employed analyse structural with both linear non-linear behaviour.
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