Eventos Anais de eventos
ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
THE USE OF AN OPEN SOURCE FINITE ELEMENT CODE FOR AEROELASTIC ANALYSES
Submission Author:
Adolfo Gomes Marto , SP
Co-Authors:
João Luiz F. Azevedo
Presenter: Adolfo Gomes Marto
doi://10.26678/ABCM.ENCIT2016.CIT2016-0182
Abstract
The present paper intends to evaluate the utilization of some open source finite element code for aeroelastic analyses. Usually, aeroelastic analyses use linear approximations in order to predict instabilities due to fluid-structural interactions. Nowadays, it is possible to include nonlinear aerodynamic effects on the analyses using Computational Fluid Dynamics techniques. The aerodynamic phenomena are better represented in this way, nevertheless, it is necessary a huge mesh to represent the environment. In another way, the mesh to represent the dynamics of the structure is simpler than the aerodynamic mesh. There are several codes based on the Finite Element Method which are able to solve dynamic analyses using this sort of mesh. The coupling between a huge mesh and the simple one is not trivial and the utilization of independent codes (aeroelastic and structural code) is inefficient due to excessive computational time for exchanging information through files. As an alternative, it is possible to include the Structural Finite Element solver into an aeroelastic analysis framework which already incorporates the aerodynamic code. There are traditional routines implemented in open codes for Finite Element Analyses. In order to evaluated Finite Element codes to be used, a classical wing model was tested using the commercial FEA code and the open one. Linear and nonlinear time response test cases are compared and the results will be included in the final paper.
Keywords
Aeroelasticity, Finite Element Method, Flutter, Aeroelasticity, Finite Element Method, Flutter, Aeroelasticity, Finite Element Method, Flutter
