Enhanced coupled elasto-plastic-damage models to describe concrete behaviour in cyclic laboratory tests: comparison and improvement

• Autorzy: Marzec I. , Tejchman J.
• Języki publikacji: EN

Abstrakty

EN

The paper presents two-dimensional FE simulation results of the concrete behaviour under quasi-static cyclic loading using different enhanced coupled elasto-plastic-damage continuum models. Attention is paid to strain localization and stiffness degradation under tensile bending failure. To ensure the mesh-independence, to properly reproduce strain localization and to capture a deterministic size effect, all constitutive models include a characteristic length of micro-structure by means of a non-local theory. Numerical results are compared with corresponding cyclic laboratory tests on concrete specimens under bending. Advantages and disadvantages of coupled models used are outlined. In addition, numerical aspects of implementation and non-local averaging of coupled models are discussed. Finally, a new improved model is proposed to describe strain localization simultaneously under both tension and compression.

Słowa kluczowe

EN

beam; concrete; characteristic length; damage mechanics; elasto-plasticity; coupled model; non-local theory; stiffness degradation; stiffness recovery; strain localization

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Archives of Mechanics
• Rocznik: 2012
• Tom: Vol. 64, nr 3
• Strony: 227--227
• Opis fizyczny: –-259, Bibliogr. 61 poz.

Twórcy

autor

Marzec I.

autor

Tejchman J.

• Faculty of Civil and Environmental Engineering Gdańsk University of Technology Narutowicza 11/12 80-233 Gdańsk-Wrzeszcz, Poland,

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