Thermomechanical modeling of metals at finite strains: First and mixed order finite elements

Adam, Laurent; Ponthot, Jean-Philippe

doi:10.1016/j.ijsolstr.2005.03.020

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Thermomechanical modeling of metals at finite strains: First and mixed order finite elements

Adam, Laurent; Ponthot, Jean-Philippe

2005 • In International Journal of Solids and Structures, 42 (21-22), p. 5615-5655

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https://hdl.handle.net/2268/3141

DOI
10.1016/j.ijsolstr.2005.03.020

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Keywords :

finite element; Mixed order element; large strains; enhanced assumed strain; selective reduced integration; linear element; quadratic element

Abstract :

[en] The aim of this paper is to describe an updated EAS (Enhanced Assumed Strain) finite element formalism developed to model the thermomechanical behavior of metals submitted to large strains. We will also expose the use of mixed order elements (first order mechanical elements strongly coupled with quadratic thermal elements) which, as we will show, is of particular interest for modeling fast processes inducing important temperature gradients. The features of this formalism, used jointly with an Updated Lagrangian approach and an hypoelastic anisothermal constitutive formulation, will be described. Three applications involving finite strains and important thermomechanical couplings will be studied. The results obtained will be compared with the results given by the now classical SRI (Selective Reduced Integration) formalism. (c) 2005 Elsevier Ltd. All rights reserved.

Disciplines :

Mechanical engineering
Materials science & engineering

Author, co-author :

Adam, Laurent; Université de Liège - ULiège > LTAS – Milieux Continus et Thermomécanique

Ponthot, Jean-Philippe ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire

Language :

English

Title :

Thermomechanical modeling of metals at finite strains: First and mixed order finite elements

Publication date :

October 2005

Journal title :

International Journal of Solids and Structures

ISSN :

0020-7683

eISSN :

1879-2146

Publisher :

Pergamon Press - An Imprint of Elsevier Science, Oxford, United Kingdom

Volume :

Issue :

21-22

Pages :

5615-5655

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 26 November 2009

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8 (8 by ULiège)

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