05.1 - Graduação (UACSA)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2909
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Resultados da Pesquisa
Item Simulação numérica de uma prótese transtibial do tipo flex para corrida(2024-09-27) Barbosa, Jéssica Natália da Silva; Lins, Erb Ferreira; Oliveira, Edilma Pereira; http://lattes.cnpq.br/5272283698536321; http://lattes.cnpq.br/2366259555737290Prostheses play an essential role in the recovery of autonomy in amputees, allowing the practice of physical exercises essential for physical and mental health. This study analyzed the structural behavior and blade optimization of a flex-type transtibial prosthesis, considering the biomechanics of human gait and the reaction forces of the ground during running. The methodology adopted involved the three-dimensional modeling of the prosthesis, the structural analysis through the finite element method and the optimization through a correlation analysis of dimensional parameters to minimize the stresses on the prosthesis. The results showed that the maximum equivalent stress in the model optimized by the applied methodology showed a reduction of 24.73% in relation to the reference model. The methodology presented allows the construction of prostheses with geometric constraints that simultaneously minimize engineering requirements.Item Análise de tensões em flanges eólicos utilizando ferramentas CAE(2024-03-07) Inocencio, Igor Guilerme Neri; Lins, Erb Ferreira; http://lattes.cnpq.br/5272283698536321; https://lattes.cnpq.br/4975371866385642The growth demand for energy power and the use of wind technology to generate it is a current trend on today worldwide. Seeking to better understand the behavior of a crucial structural component of wind turbines, the present study employs the finite element method to examine stress distribution in the wind tower flange under operational loads conditions without wind action and under extreme wind speeds as speciefied by the International Electrotechnical Commission (IEC). The results highlight stress concentration areas and identify potential susceptibility to fatigue failure, while also assessing the impact of these loads on the structure's integrity. Finite element analysis reveals stress distributions in the flange, with higher concentration susceptibility identified in external regions. The values obtained from this analysis, applied to a fatigue analysis, demonstrate that the flange's safety factors are high for the magnitudes of stresses encountered.Item Análise dinâmica de estruturas treliçadas utilizando o método dos elementos finitos(2021-03-05) Ferreira, Lenilson Régio; Ribeiro, Paulo Marcelo Vieira; http://lattes.cnpq.br/0171120821110850; http://lattes.cnpq.br/2234155499243922It is noticed that currently there has been a significant increase in relation to the creation of source codes and/or computer programs for structural design purposes, and several are the languages that are used for such creations, in this work a source code was developed in the Matlab language, where the main objective of it aimed to build a code based on the Finite Element Methods - FEM, where we can solve dynamic problems of truss structures with point efforts applied to nodes, so that static (displacement) and dynamic (natural frequencies and vibration modes) information of the structure was obtained, and in parallel a comparison of these results was performed with a program already renowned in the market, which in this case was SAP2000, where it aims to facilitate the understanding of the application of this method to students and newly graduated engineers, in order to reduce errors in calculations related to structural analysis. The results obtained from the comparison were very close, with very little difference between the values. In the case of static analysis nodal displacements, the results were exactly the same. The natural frequencies and vibration modes, on the other hand, gave a difference that is practically negligible. In general, it was possible to validate the formulation developed in this work, since both paths gave results converging to the same point.Item Projeto estrutural de vigas-parede biapoiadas de concreto armado(2019-07-09) Couto, André Vinícius Melo; Silva, Jordlly Reydson de Barros; http://lattes.cnpq.br/4382584044561547; http://lattes.cnpq.br/4544033112109443The purpose of this work is to present the main fundamentals of single-span deep beams structural design, and analyze these elements through the Finite Element Method (FEM), using ABAQUS/CAE software, student version. During the study, a design procedure is discussed, which is implemented in the Smath Studio software. A discussion is also made about the FEM modeling procedure, such as the deep beam information implementation, such as material, supports and applied loads. Thus, for a problem present in the literature, the support tensions, provided by the software are compared, verifying the proximity of the answers obtained. Finally, a parameter study of the problem is made, through the Smath Studio routine, observing the influence of geometric parameters and loads on the behavior of the structure.