Finite Element Analysis of the Compression Test of Fiber High Performance Concrete

The author of this article utilizes ANSYS, a finite element analysis software, to build a concrete model that contains randomly distributed basalt fiber on the mesoscopic level with regard to the bond slip between the fiber and concrete interfaces, and simulates the compression test to examine the function of basalt fiber during the process of the concrete sustaining stress, undergoing deformation and cracking as well as the influence of fiber content over stress distribution. The result suggests that, until the plastic deformation begins, the fiber will not share the stress and the influence of fiber content over stress distribution will not become evident; when the concrete begins to crack, the fiber exerts an apparent crack-resistance effect; and the fiber’s dispersion effect over the stress concentration of the concrete intensifies along with the increase of fiber content.