Multiscale Modeling of Concrete Elements

Multiscale random lattice modeling of materials is gaining increasing attention in the scientific community, and has led to the definition of various modeling approaches, based on the principle that the behavior of a continuum body can be described by means of properly arranged nodes interconnected by 1-dimensional elements. The multiscale modeling of structures and materials is one of the most promising ways of predicting the life cycle of civil engineering constructions, as well as simulating their response with respect to strong excitations (i.e. natural hazards like earthquakes, impacts or floods). 

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We perform numerical and experimental multiscale investigations on plain and reinforced concrete elements that allow us to characterize the material response at different length scales. This information is bridged across the scales by means of multi scaling techniques that allow us for the solution of complex structural-level problems while retaining information on the small-scale features of the material.

 

Experimental (left) and numerical (right) cube specimen at compressive failure

Numerical predictions and experimental observations of the stress-strain curve for uniaxial compression

© 2019 Alessandro Fascetti