Application of the generalized conforming flat shell element to geometrical non-linear analysis for composite stiffened shell structures

• Published in: Communications in numerical methods in engineering 1999-06, Vol.15 (6), p.399-412
• Main Authors: Qun, Zhang, Mu, Lu, Wenqi, Kuang
• Format: Article
• Language: English
• Subjects: Buckling; composite stiffened shell structures; Computational techniques; drilling degrees of freedom; Exact sciences and technology; Finite-element and galerkin methods; Fundamental areas of phenomenology (including applications); generalized conforming; geometrical non-linear; Mathematical methods in physics; Physics; Solid mechanics; Static buckling and instability; Structural and continuum mechanics; UL formulation
• ISSN: 1069-8299; 1099-0887
• DOI: 10.1002/(SICI)1099-0887(199906/07)15:6<399::AID-CNM254>3.0.CO;2-Q

This paper proves the generalized compatibility of the boundary displacement pattern of the generalized conforming flat shell element with drilling degrees of freedom and the central line displacement pattern of the beam element with Hermite interpolation. According to the incremental equation of virtual work of the three dimensional (3D) continuum, the UL formulations of the 3D beam elements and generalized conforming flat shell elements with drilling DOFs are used for geometrical non‐linear analysis of composite stiffened shell structures. Here the concentric stiffener is assumed to be isotropic. A number of numerical examples are given to demonstrate the effectiveness of the proposed approach. Copyright © 1999 John Wiley & Sons, Ltd.