A Simplified Inverse Analysis Procedure for the Stress-Crack Opening Relationship of Fiber-Reinforced Concrete

The direct tensile test (DTT) is the most recommended to determine behavior of fiber-reinforced concrete (FRC). However, this challenging perform. Several studies have investigated inverse analysis through simplified tests, such as bending test. This study deals with developing a new approach perform an for three-point (3PBT) involving FRC. A proposed methodology concerns carrying out procedure by parts. Initially, parameters that influence initial part stress–crack opening curve are adjusted. Progressively, other adjusted considering increment section. provides implemented algorithm more efficiency. strategy establishment criteria proposed. Its results compared experimental data from literature, whose steel (SFRC) tested characteristics present different attributes fibers, shape, and length. obtained curves in tension reasonable accuracy, indicating can be helpful characterization post-cracking FRC behavior.