Computational post-failure analysis with a second gradient theory
Computational post-failure analysis with a second gradient theory
This article presents a theory of Gradient Elastoplasticity for strain-softening materials, in which internal length scales are present in both the elastic and the elastoplastic regime. A numerical discretisation based on the displacement formulation and a C1 finite element is used. It is shown that the formulation enables robust modelling of the post-peak material behaviour leading to localisation of deformation, spontaneously tracking emergent instabilities and quantitatively capturing details of the final localised failure mechanism.
1067-1079
Zervos, A.
9e60164e-af2c-4776-af7d-dfc9a454c46e
Papanastasiou, P.
26755af9-c3b5-4350-b0f0-f83c9fca8e92
2010
Zervos, A.
9e60164e-af2c-4776-af7d-dfc9a454c46e
Papanastasiou, P.
26755af9-c3b5-4350-b0f0-f83c9fca8e92
Zervos, A. and Papanastasiou, P.
(2010)
Computational post-failure analysis with a second gradient theory.
European Journal of Environmental and Civil Engineering, 14 (8-9), .
(doi:10.3166/EJECE.14.1067-1079).
Abstract
This article presents a theory of Gradient Elastoplasticity for strain-softening materials, in which internal length scales are present in both the elastic and the elastoplastic regime. A numerical discretisation based on the displacement formulation and a C1 finite element is used. It is shown that the formulation enables robust modelling of the post-peak material behaviour leading to localisation of deformation, spontaneously tracking emergent instabilities and quantitatively capturing details of the final localised failure mechanism.
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Published date: 2010
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Local EPrints ID: 184751
URI: http://eprints.soton.ac.uk/id/eprint/184751
ISSN: 1964-8189
PURE UUID: 5e18eae0-4115-4215-b645-83f1943400af
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Date deposited: 09 May 2011 14:30
Last modified: 15 Mar 2024 03:16
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P. Papanastasiou
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