@inproceedings{1b77db201d524e36a5a7aa128d8ca6de,
title = "Postbuckling analysis and optimization of stiffened fuselage panels utilizing variable-stiffness laminates",
abstract = "The optimization of a composite stiffened fuselage window belt made by steered-fiber laminates subject to a torsional moment demonstrates 26% post-buckling stability improvement compared to a conventional straight-fiber design. The nonlinear buckling stability is evaluated by maximum skin's transverse displacement in this research work. Post-optimization evaluations reveal that the optimal panel has 23% lower Tsai-Wu failure index and 10% reduction in in-plane shear stiffness compared to the reference design. The investigation paves a way towards significant airframe weight saving by utilizing curvilinear fibers. In order to avoid local optimum traps, Global Response Surface Method (GRSM) is selected as a more efficient optimization procedure compared to conventional evolutionary algorithms. Implicit nonlinear finite element solver Abaqus is utilized to produce nonlinear geometrical responses.",
keywords = "Curvilinear fibers, Optimization, Post-buckling, Stiffened fuselage side panels",
author = "Tanut Ungwattanapanit and Horst Baier",
year = "2014",
language = "English",
series = "29th Congress of the International Council of the Aeronautical Sciences, ICAS 2014",
publisher = "International Council of the Aeronautical Sciences",
booktitle = "29th Congress of the International Council of the Aeronautical Sciences, ICAS 2014",
note = "29th Congress of the International Council of the Aeronautical Sciences, ICAS 2014 ; Conference date: 07-09-2014 Through 12-09-2014",
}