Meso-Mechanical Simulation of the Mechanical Behavior of Different Types of Steel Fibers Reinforced Concretes

Introducing steel fibers into traditional concrete can improve its mechanical properties and crack resistance, but few studies have considered how the fiber shape bond-slip effect between matrix affect behavior of concrete. This paper establishes a three-dimensional representative volume element (3D RVE) fiber-reinforced (SFRC) with random distribution, different shapes, interfacial strengths using Python, Abaqus Hypermesh. Uniaxial tensile behaviors failure modes SFRC are systematically simulated analyzed. The results show that when strength fiber/concrete is changed from 1 to 3 MPa, increases accordingly. When greater than it has no on strength. Additionally, if end-hook increased by 7% compared straight fibers, whereas reaches 2.64 MPa (strength pure concrete), little SFRC. Moreover, simulation also damage dominates less propagation rate in fiber-modified lower Therefore, this research reveals under low strength, ideal be achieved only relatively high.