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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1989, Vol. 10 ›› Issue (6): 246-253.

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A FINITE ELEMENT ANALYSIS OF NONLINEAR INSTABILITY FOR LAMINATED COMPOSITE CYLINDRICAL SHELLS WITH LONGITUDINAL STIFFENERS AND TRANSVERSE FRAMES

He Jianguo1, Hu Xunchuan1, Li Songnian1, Xing Tianan2   

  1. 1. Beijing University of Aeronautics aid Astronautics;2. Beijing General Design Department of Precision Machinery
  • Received:1988-04-05 Revised:1900-01-01 Online:1989-06-25 Published:1989-06-25

Abstract:

A nonlinear finite element based on the Total Lagrangian Incremental Formulation of a two-dimensional layered anisotropic medium is developed and its use in buckling as well as postbuckling analysis of stiffened layered composite shells is demonstrated via examples under pure axial compressive loading.A finite element based on Sander's shell theory with transverse shear strains is also presented.The paper gives stiffness matrix of a square shell element,a straight beam and a curved beam element.Finally .several example, problems are given.

Key words: composite, shell, buckling, finite element methods