Modelagem computacional de placas de matriz cimentícea reforçadas com fibras de sisal

Abstract

In this dissertation was computationally modeled the behavior of plates of cementations matrix reinforced with long fibers of sisal through the trade platform DIANA. Plates modeled had two or three layers of reinforcement with rates between 2.78 and 5.40%, aligned along, with a total of four plates. The modeling contemplated the tensile direct and four points bending. The results indicate that the use of fixed model of cracking, associated with the exponential model for the tensile behavior and ideal model for the compression, generates good answers. The results also suggest a improved fiber-matrix adhesion, when the plates are bending. Based on the good results obtained, it was possible to estimate the behavior of the composites for diferente rates of sisal fibers in tensile direct and four point bending. It was also concluded that to obtain these results is not necessary to use finite elemento meshes very refined.