Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
NUMERICAL MODAL ANALYSIS OF AN AIRCRAFT WING PROTOTYPE FOR SAE AERODESIGN COMPETITION
Submission Author:
Victor Emmanuel Liete Gasparetto , DF , Brazil
Co-Authors:
Victor Emmanuel Liete Gasparetto, Marcela Machado, Sergio Henrique da Silva Carneiro
Presenter: Victor Emmanuel Liete Gasparetto
doi://10.26678/ABCM.COBEM2019.COB2019-0647
Abstract
The SAE Aerodesign (Society of Automotive Engineers) competition encourages undergraduate and graduate students from Brazil and Latin America to develop a small-scale cargo transport aircraft, from conception, detailed design, construction and testing, with the aim of completing a pre-established flight mission. It is a project carried to the limit of the structural efficiency, looking for an internal structure of low empty-weight, optimizing it for the required flight conditions. In order to understand the response of the aircraft to dynamic demands and ensure project safety, it is necessary to be attentive to the modal parameters of the structure, such as natural frequencies, damping factors and vibrational modes. This work presents the modal analysis of an aircraft prototype designed by the Aerodesign team of the University of Brasília. It is studied the finite element modeling of simplified structures that compose the aircraft, such as the main wing spar, proposing a method for determining equivalent flexural stiffness of beams using the Euler-Bernoulli formulation; the complete structure of the prototype aircraft is then modeled, making a comparative analysis between different types of models considered, discussing at the end, changes that aim to make them more complete.
Keywords
modal analysis, finite elements modeling, Aerodesign, Euler-Bernoulli Beam Theory
