ANALYSIS OF TAPERED STRUCTURES BY MEANS OF REFINED 1D MODELS

This document presents the static analysis of reinforced tapered structures using 1D models. These models are based on one dimensional formulation derived through the unified formulation(CUF). This formulation provides 3D-like results thanks to the use of polynomial expansions to describe the displacement field over the cross-section. Depending on the types of expansion used, different classes of CUF are obtained. In this work the Lagrange expansions were used. The use of LE models allows each structural component to be considered separately; this approach is called component wise (CW). Different kind of aeronautical structures, gradually more complex, were studied. The stress and displacement fields due to simple load cases were obtained. The results have been compared with those obtained using commercial tools, 3D and 2D models have been used as comparisons. These last use solid and shell elements. The results show the capability of the present refined 1D models to achieve results usually obtained by use of solid models and therefore, with higher computational cost.

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