Análise numérica estrutural entre modelos de elementos de placa e sólido utilizando uma viga de perfil "C"

Abstract

This work presents a study on stress analysis in channel “C” beams using plate element models and solid element models. The search carried out in this study has relevance for the development of products in aeronautical engineering, especially with regard to stress analysis in “C” channel beams its application in aircraft structures. The work addresses the need for solutions based on global models composed of plate elements, proposing the variation of parameters such as the radius to evaluate the correlation between the voltages of the different modeling methods. The methodology addresses the use of virtual test specimens, in using the plate model as a baseline with a convergence analysis of tensions. The results evaluated the difference between the tensions obtained between the different models proposing the use of a voltage increment factor Ki and demonstrate that the solid element model is more conservative for the analysis of the maximum stress in the central region (vertex) of a “C” channel beam, on the other hand, the plate model proved to be more conservative for the analysis of stresses in the radius from the same region. It is noted the relevance of the level of refinement and its relationship with the computational cost associated with the numerical precision of the analyses. It is highlighted the importance of the fidelity of the boundary conditions and application conditions of the load to ensure accurate and reliable results. The Ki factor can be used as tension correction between models once the problem is modeled according to previous studies. Furthermore, suggestions for future work are highlighted, such as parameter variation, local refinement, and boundary condition enhancement and load application.