A new inverse analysis approach for predicting the fracture mode I parameters of fibre reinforced concrete

This paper describes the development of a new inverse analysis approach to derive fracture mode I parameters fibre reinforced concrete (FRC) by using experimental data obtained from three-point notched beam bending tests (3PNBBT) and round panel supported on three points (RPT-3PS). The is based global fitting strategy, in which numerical response simulated means analytical models, fitted results modifying variables that govern tensile behaviour FRC. procedure relies bounded multi-variable nonlinear least squares algorithm, coupled with an automatic updating input force deviation error between results. performance predictive potential proposed are assessed 3PNBBT RPT-3PS retrieved literature. Also, robustness implemented methodology also investigated evaluating impact initial guess derived parameters. Finally, developed tool applied within context real-scale FRC beam, where were newly methodology.