Abstract
Abstract This paper presents a finite element (FE) method of modelling reinforced concrete beams. The proposed model takes into account the phenomena characteristic of reinforced concrete structures, such as the interaction between two materials (concrete and steel), the cracking caused by mechanical loads and the variation of the Young's modulus under increasing load. A relevant numerical FE analysis was carried out in the ABAQUS system using the concrete damaged plasticity (CDP) model. The character of Young's modulus variation due to increasing stress intensity level was taken from the author's own research. The results of the FE calculations were compared with the results yielded by the author's numerical bar model.
Highlights
Nowadays structural engineers are often adopting innovative design solutions not covered by the schemes and algorithms proposed by universal design codes
This paper presents a procedure for the FEM modelling of reinforced concrete beams, using concrete parameters obtained from in-house tests
This paper presents a way of modelling a reinforced concrete beam in ABAQUS using the concrete damaged plasticity (CDP) model which takes into account the nonlinear behaviour of the concrete, the cracking of the reinforced element and the issue described in detail by Pędziwiatr (2008, 2009) – the interaction between concrete and rebars
Summary
Nowadays structural engineers are often adopting innovative design solutions not covered by the schemes and algorithms proposed by universal design codes. One can create and analyse complicated numerical models (especially FEM models) whose cost is relatively low (in comparison with experimental models and the associated measuring apparatus). The adopted assumptions – the strength and deformation parameters of the materials of which the structure is to be made – are of utmost importance. This paper presents a procedure for the FEM modelling of reinforced concrete beams, using concrete parameters obtained from in-house tests (mainly the Young’s modulus). The created numerical model took into account phenomena characteristic of reinforced concrete structures, such as the interaction between two materials (concrete and rebars), cracking and the variation of the Young’s modulus of the concrete depending on the stress intensity level.
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