Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
A study of the effects of post-design fiber reinforcements in structural response of metallic trusses
Submission Author:
Bárbara Minosso , RS
Co-Authors:
Bárbara Minosso, Rogério Marczak
Presenter: Bárbara Minosso
doi://10.26678/ABCM.COBEM2023.COB2023-1831
Abstract
Carbon fiber-reinforced epoxy composites have numerous applications being commonly used in applications with high structural demand. These materials can be manufactured through several processes, in the case of cylindrical tubes, one of the common processes is filament winding (FW). Many reticulated structures are manufactured using metal beams with a circular cross-section, without provision for future expansions in the project. Aiming the reusability of these structures and increasing their service life, FW process can be used to form an outer layer of fiber reinforced (FR) composite on the individual bars of existing structures in order to strengthen the structures and increase their load-bearing capacity. With the reinforcements, the isotropic beams become layered beams, changing the calculations of these structures. Based on this information, the objective of this work is to evaluate the mechanical behavior of steel tubes reinforced through FW with towpreg with Toray T700-12K-50C carbon fiber and UF3369 epoxy resin system from TCR Composites, compare their mechanical behavior with the original structure, and quantify the increase in load capacity. Analysis was carried out through finite element models of spatial truss structures using beam elements. Different angles of fiber orientation were tested. The results show that the largest gain occurs with the orientation [±25°] and the value of the frequencies does not have significant changes.
Keywords
composite tube, fiber reinforced material, Truss, mechanical response, filament winding
