Article (Scientific journals)
Using a second gradient model to simulate the behaviour of concrete structural elements
Jouan, Gwendal; Kotronis, Panagiotis; Collin, Frédéric
2014In Finite Elements in Analysis and Design, 90, p. 50-60
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Abstract :
[en] Being a quasi-brittle material, concrete under tensile loading exhibits a strain softening behaviour that cannot be accurately reproduced with classical (with-out an internal length parameter) continuum mechanics models. An internal length parameter must be introduced to regularize the problem, as in the case of the so called second gradient model. In this approach, an enriched kinematic description of the continuum is adopted considering higher (sec-ond) order gradients of the displacements following the work of Cosserat, Toupin, Mindlin and Germain. The model has been developed by Chambon and co-workers and has been mainly used with plasticity constitutive laws to reproduce the non linear behaviour of soils. It is here applied for the rst time to concrete and reinforced concrete specimens considering material laws based on the damage mechanics theory. The advantages and limitations of the approach are discussed, and possible improvements towards more realistic responses are suggested.
Disciplines :
Civil engineering
Author, co-author :
Jouan, Gwendal ;  Université de Liège - ULiège > Département ArGEnCo > Géotechnique
Kotronis, Panagiotis;  Ecole Centrale de Nantes
Collin, Frédéric  ;  Université de Liège - ULiège > Département ArGEnCo > Géotechnique
Language :
English
Title :
Using a second gradient model to simulate the behaviour of concrete structural elements
Publication date :
2014
Journal title :
Finite Elements in Analysis and Design
ISSN :
0168-874X
eISSN :
1872-6925
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
90
Pages :
50-60
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 22 May 2014

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