Evaluación del comportamiento en estados de carga de tracción pura de materiales compuestos tejidos híbridos-matriz vinilester mediante el método de los elementos finitos

Abstract

Hybrid composites present a wide range of mechanical  properties that cannot be obtained with a single fibers type.  These characteristics are highly dependent on the orientation  and configuration of each reinforcement. Thus simulation  studies that predict the properties of these materials are increasingly sought in order to make the best design possible.  In the present work, finite element modeling has been used  to develop a methodology to determine the mechanical  properties of hybrid Kevlar-carbon laminates, which are  frequently applied to manufacture small vessels, starting from  the characteristics of the matrix and fibers that compose  them. The initially employed methodology established the  hypothesis required to define the characteristics of a hybrid  fabric sheet from the properties and geometry of the fibers  and resin. The properties of the laminate, considered a stack  of sheets, are determined with the obtained data. This method  was validated by comparing the simulation values with the  experimental results obtained in the tensile tests. Errors  related to mechanical strength were around 5-10%, and up to  30% for deformation.