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  3. Vol. 6 No. 3 (2002)
  4. A NON-LOCAL ELASTO-PLASTIC MODEL TO DESCRIBE LOCALISATIONS OF DEFORMATION IN CONCRETE

A NON-LOCAL ELASTO-PLASTIC MODEL TO DESCRIBE LOCALISATIONS OF DEFORMATION IN CONCRETE

Abstract

The paper presents numerical simulations of behaviour of concrete elements subjected to uniaxial compression for plane strain. FE calculations are performed with two different elasto-plastic constitutive laws for concrete. Numerical results obtained suffer from mesh sensivity due to the presence of material softening. To obtain a well-posed boundary problem and a mesh independent solution, conventional constitutive laws with softening require an extension (called regularisation) to describe properly the localisations of deformations. In this paper elasto-plastic constitutive laws are extended by non-local strain terms. Owing to them, localisations of deformations are realistically captured.

Keywords:

concrete, localisation, non-local theory, elasto-plasticity, characteristic length

Details

Issue
Vol. 6 No. 3 (2002)
Section
Research article
Published
2002-09-30
Licencja:
Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Authors

  • JERZY BOBIŃSKI

    Gdansk University of Technology, Civil Engineering Faculty, Academic Computer Centre in Gdansk TASK

  • JACEK TEJCHMAN

    Gdansk University of Technology, Civil Engineering Faculty

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