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A Free-formulation-based Flat Shell Element for Non-linear Analysis of Thin Composite Structures by E. Madenci; A. Barut is a Engineering article available to read on EtoBox.

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A flat shell element based on the free-formulation finite element concept is developed for analysing geometrically non-linear thin composite shells. A corotational form of the updated Lagrangian formulation is utilized. Numerical results for typical validation problems are presented in order to demonstrate the accuracy and validity of this element. These results are obtained by solving the incremental equilibrium equations through the cylindrical arc-length method. 'shear locking'. However, this may introduce spurious zero-energy modes. Recently, Kebari and Cassell' developed a degenerate shell element with a method to stabilize the spurious zero-energy modes. This element is capable of handling geometric and material non-linearities for isotropic materials. For the analysis of geometrically non-linear laminated composite shells, Yeom and Lee2 developed a degenerate solid shell element by assuming independent strain and displacement fields. Although the initial developments with triangular flat shell elements suffered from convergence and poor performance on highly coupled bending and membrane deformations, Bathe and Ho3 and Hsiao4 eliminated these obstacles. Hsiao4 extended the fl

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Author

E. Madenci; A. Barut

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0029-5981)

Published

1994

Language

EN

Field

Engineering (Physical Sciences)