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

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

Faramarzi, Asaad, Javadi, Akbar and Ahangar-Asr, Alireza (2013) Numerical implementation of EPR-based material models in finite element analysis. Computers and Structures, 118. pp. 100-108. ISSN 0045-7949 (doi:10.1016/j.compstruc.2012.10.002)

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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.

Item Type: Article
Additional Information: [1] Available online 10 November 2012. [2] Vol. 118 is the Special Issue: UK Association for Computational Mechanics in Engineering.
Uncontrolled Keywords: constitutive model, evolutionary computing, finite element method, stiffness matrix, EPR
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Pre-2014 Departments: School of Engineering
Related URLs:
Last Modified: 24 Oct 2016 08:57
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/9576

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