COMPUTATIONAL MODELING OF TEST TENSIL OF WOODS WITH REINFORCEMENT OF RESINED LAMINATES OF FIBERS OF GLASS AND CARBON

Abstract

Reinforcement knowledge demands from the designer a broad view of theoretical and practical behavior for the material of the structure. In this case, as wood structures have a characteristic of being able to exchange damaged parts. However, instead of changing a piece one can reinforce it locally, or even a piece as a whole. Thus, one of the methods used and the reinforcement of fibers such as, for example, carbon, aramid or glass. Thus, in order to better understand the behavior of this work in this work, the aim was to perform a numerical modeling of wood pieces cut in half, subjected to traction and reinforced with carbon or glass fibers. The modeling is carried out from a reference research, where the wood of Eucalyptus grandis in natura and autoclaved was introduced, with the use of epoxy and tested by traction. It is worth mentioning that a wood is cut in half. Thus, a transfer of traction from the cut sections is done only by the fibrous reflux. The modeling developed in the DIANA ® program is carried out from tests and then validated. Validation occurs via maximum force and burst modes. After validating the behavior of the mesh, a rate of reinforcement area, carbon and glass, varies in the wood. From this parametric analysis, it is verified the influence of the variation of the area of reinforcement on the final resistance to the traction of the reinforced wood and its modes of rupture.