Fe-analysis of spacing of localized zones in reinforced concrete bars under tension using elasto-plasticity with non-local softening

ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Fe-analysis of spacing of localized zones in reinforced concrete bars under tension using elasto-plasticity with non-local softening

Author(s): Ł. Widulinski, J. Bobinski, J. Tejchman

Publication: KILW

Volume: 55

Issue: 2

Appears on pages(s): 257-281

Keywords: bond-slip, reinforced concrete, crack, elasto-plasticity, FEM, non-locality, reinforcement

Date: 4/1/2009

Abstract:
The paper presents quasi-static 3D FE-simulations of strain localization in a reinforced concrete bar subject to tension. The material was modeled with smeared continuum crack model using an elasto-plastic constitutive law. A Rankine criterion with isotropic softening and associated flow rule was adopted in a tensile regime of concrete. The behavior of reinforcement was described with an elasto-perfect plastic constitutive model. To ensure the mesh-independency, the model was enhanced in a softening regime by a non-local term to include a characteristic length of micro-structure. The FE-analyses were carried out with a different characteristic length, non-local parameter, reinforcement ratio, distribution of the tensile strength, bond between concrete and reinforcement, softening curve, softening rate and energy fracture.


Polish Academy of Sciences, International Partner Access.

View Resource »