Analysis of multiple cracking in textile reinforced concrete (original) (raw)
A model capable of capturing the effect of irregularly structured reinforcement in a brittle matrix is presented. It introduces a homogenization procedure for the state fields at the microscale in the vicinity of a crack bridge. In combination with a mesoscale model for matrix cracking the homogenized state fields are used for explicit calculation of the strain hardening response of the composite. The model has been formulated for brittle matrix composites with reinforcement that exhibits random properties, e.g. due to random fiber orientation or because the penetration profile of the matrix into multifilament yarns is irregular. In the present paper we use multifilament yarns applied in textile reinforced concrete (TRC) to demonstrate the capabilities of the model. Other types of heterogeneous reinforcement are discussed in the summary. In the reported parametric study, deterministically defined variables are compared with randomized variables and conclusions are drawn about the influence of their statistical parameters on the composite's behavior. The results are presented in form of stressstrain diagrams and crack width histograms. In this way, the significance of influence of micromechanical parameters and their interdependencies on the mesomechanical response of the composite is shown.
Loading Preview
Sorry, preview is currently unavailable. You can download the paper by clicking the button above.