Finite Element Modelling and Identification of the Material Properties of Fibre Concrete

Concrete is frequently used when designing the civil engineering structures. It is, in particular, used for elements of the load-carrying systems. High strength concrete, fibres in concrete or recycled materials are employed as advanced solutions. It is necessary to identify the material properties of new materials and composites with respect to the future use. This is, particularly, the case of non-linear analyses which are performed in designs and analyses. This paper focuses on evaluation and modelling of three point flexural test of fibre concrete beams. The purpose is to evaluate the basic properties which will be used for constitutive models in the non-linear analyses. It is assumed that the constitutive models of concrete are based on the fracture-plastic theory. The modelling and analyses are performed in ATENA - the software application which is based on the Finite Element Method.