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Parametrization modeling and analysis on spar web with cutouts based on PCL

Bataxi,YU Zhefeng,CAO Xiang,WANG Hai(School of Aeronautics and Astronautics,Shanghai Jiaotong University,Shanghai 200240,China)  
To ensure the structure stability of spar web with cutouts,a parametrization modeling program is developed for composite spar structures with cutouts by PCL,and the effect of two different cutout positions on structure stability is analyzed.The results indicate that the distance between circle cutouts and spar root and the distance between teardrop-shaped cutouts and circle cutouts have significant effect on structure stability,that is,the buckling factor firstly increases and then decreases with the increase of the distance between circle cutouts and spar root,and monotonously decreases with the increase of the distance between teardrop-shaped cutouts and circular cutouts;the distance between teardrop-shaped cutouts and lower wing panel has a little influence on structure stability.Satisfying with the structure stability and the maximum allowable strain,the minimum distance between teardrop-shape cutouts and lower panel is determined.
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