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《Journal of Beijing University of Aeronautics and Astronautics》 2013-04
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Layout optimization of civil airplane wing structure based on automated finite element modeling

Yan Weitian Luo Mingqiang Liu Hu Wu Zhe(School of Aeronautic Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China)  
Focusing on the widely-applied two spar wing structure on civil airplanes,a wing CAD model was created parametrically according to the numbers of its stringers and ribs.Then a wing structure finite element method(FEM) model was constructed automatically by Patran command language(PCL),it was realized by 4 major steps,which were geometry model segmentation,geometry segment renumbering,segment mesh definition and FEM model generation.A complete procedure was fulfilled to construct and analyze a wing structure FEM model automatically after the numbers of its stringers and ribs had been changed,then it was integrated into a wing structure layout optimization that could be applied in preliminary design.In the end,a case study model was constructed referring to a typical civil airplane wing.Under the constraints of static strength,stiffness and skin stability,the numbers of stringers and ribs were optimized to achieve a minimum structure weight.Results show that the optimal layout brought a 10.1% structure weight reduction,which indicates the effectiveness and feasibility of the optimization.
【Fund】: 工业和信息化部“民用飞机总体设计支撑软件”基金资助项目
【CateGory Index】: V224
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