A coupled damage-plasticity model for concrete based on thermodynamic principles: Part II: non-local regularization and numerical implementation
Date
2008
Authors
Nguyen, G.
Houlsby, G.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
International Journal for Numerical and Analytical Methods in Geomechanics, 2008; 32(4):391-413
Statement of Responsibility
Giang D. Nguyen and Guy T. Houlsby
Conference Name
DOI
Abstract
<jats:title>Abstract</jats:title><jats:p>Non‐local regularization is applied to a new coupled damage–plasticity model (<jats:italic>Int. J. Numer. Anal. Meth. Geomech.</jats:italic> 2007; DOI: 10.1002/nag.627), turning it into a non‐local model. This procedure resolves softening‐related problems encountered in local constitutive models when dealing with softening materials. The parameter identification of the new non‐local coupled damage–plasticity model is addressed, with all parameters being shown to be obtainable from the experimental data on concrete. Because of the appearance of non‐local spatial integrals in the constitutive equations, a new implementation scheme is developed for the integration of the non‐local incremental constitutive equations in nonlinear finite element analysis. The performance of the non‐local model is assessed against a range of two‐dimensional structural tests on concrete, illustrating the stability of the stress update procedure and the lack of mesh dependency of the model. Copyright © 2007 John Wiley & Sons, Ltd.</jats:p>
School/Discipline
Dissertation Note
Provenance
Description
Access Status
Rights
Copyright © 2007 John Wiley & Sons, Ltd.