Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
A tool for local buckling optimization of composite panels using NASTRAN® SOL 200
Submission Author:
Guilherme Abreu , SP , Brazil
Co-Authors:
Saullo Castro, José Antonio Hernandes, Guilherme Abreu
Presenter: Guilherme Abreu
doi://10.26678/ABCM.COBEM2017.COB17-2396
Abstract
This work performs a local buckling optimization of composite panels with advanced constraints via multidisciplinary optimization solution of NASTRAN® (SOL 200) proposing a sizing methodology of local buckling with a semi-analytical approach, alternatively to the buckling eigenvalue solution at finite element solvers. An external FORTRAN® subroutine calculates at optimization runs the buckling eigenvalue for each panel. A Python-built management tool of the structure and the finite element model was extended, to control and create, automatically, the optimization cards. The optimization was performed considering two types of loading simulating limit conditions: up-bending with load factor of 2.5g and down-bending condition with load factor of -1.0g. Results present that this methodology has a significant potential of utilization in the sizing of aeronautical structures.
Keywords
structural optimization, Composite Materials, buckling analysis, structural analysis, Finite Element Method
