Determination of the stress–crack opening relationship of SFRC an inverse analysis

Abstract

Quantifying the residual stresses Ϭfr in tension is one of the most critical issues in the theory of steel-fiberreinforced concrete (SFRC). The objective of this investigation is to determine the stress–crack opening relation of SFRC. An inverse technique is proposed for the determination of Ϭfr by employing experimental data from three-point bending tests on notched members. The nonlinear finite-element analysis program ATENA is utilized to verify the stress–crack opening relation obtained. A comparison of simulated load–crack tip opening displacement curves with experimental data attests to the adequacy of the inverse technique.