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Mechanics in Engineering ›› 2004, Vol. 26 ›› Issue (2): 0-0.doi: 10.6052/1000-0879-2003-245

• Education Study •    

PARAMETERIZATION STUDY OF ORTHOGRID STIFFENED CYLINDER SHELLS

  

  • Received:2003-06-05 Revised:1900-01-01 Online:2004-04-10 Published:2004-04-10

Abstract: The grid shape, skin thickness and stiffener size of a stiffened cylinder shell have a dramatical effect on the buckling loads. To achieve the minimum weight in this kind of structural design, a 3-D finite-element model using ABAQUS software is built. Parameterization study is carried out and general conclusions are drawn. The numerical results show that the axial buckling resistance and the buckling failure modes vary as the stiffener size and the skin thickness change. The buckling resistance reaches the maximum at the critical point where the global buckling failure mode transforms to the local buckling failure mode of the stiffened shell. According to this property, an optimal design strategy for orthogrid stiffened cylinder shells is developed. An example of the optimal design of the grid stiffened cylinder shell presented in the paper shows the validity of the present method.

Key words: buckling analysis, finite element method, optimal design, stiffened