Abstract

In this contribution, a constitutive framework of elasto-plastic phase-field model is presented, which is able to predict nonlinear behavior of high performance concrete (HPC) during low-cycle fatigue. The Drucker-Prager yield criterion is used for the formulation of an elasto-plastic damage model. For modeling of tension-compression behavior of HPC two different data driven degradation functions are interpolated and calibrated. Three-point bending experimental tests at low-cycle using notched beams of pure HPC are performed. For calibration purpose, the load-CMOD (crack mouth opening displacement) is measured. This experimental data were used to calibrate the proposed numerical model. The results show the efficiency of the proposed model to reproduce fatigue behavior of pure HPC as in the experiment.

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