Análise numérica dos deslocamentos e tensões de uma viga compósita engastada-livre com seção-caixão simulando asa aeronáutica

Abstract

In the search for improving aircraft structural efficiency, studies about the benefits of using composite materials are, to this day, a great driver for many types of research in the aeronautical community. In this context, the present work presents a numerical study of the structural behavior of a wing. Different models are analyzed, varying the structure’s material (isotropic and orthotropic) and the presence of strings, to evaluate how these properties and characteristics affect the structure. This model is represented by a closed-section beam with thin walls crimped subjected to an eccentric load. A model based on the finite element method is developed within the Femap NX Nastran® software and, the stresses and displacements due to the effects of bending and torsion were evaluated. Finally, the numerical results are compared against some analytical results available for this same beam subject to the same loads. In this way, it is possible to understand the differences between both modeling approaches as well as the impact of their respective hypothesis.