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A 4-node co-rotational ANS shell element for laminated composite structures by Ki-Du Kim; Chang-Soo Lee; Sung-Cheon Han is a Engineering article available to read on EtoBox.

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The formulation of a non-linear composite 4-node co-rotational resultant shell element is presented for the solution of bending, free vibration, critical buckling and postbuckling analysis of composite plates and shells. Using the ANS (assumed natural strain) method the present shell element generates shear locking behavior, and such element performs very well as much as shells get thin. The formulation of the geometrical stiffness presented here is exactly defined on the mid-surface and is efficient for analyzing stability problems of thin and thick laminated plates, and shells by incorporating bending moment and transverse shear resultant forces. The transverse shear stiffness is defined by an equilibrium approach instead of using the shear correction factor. The adoption of a second-order co-rotational formulation makes it computationally efficient compared to the most existing composite shell elements. The proposed formulation is computationally efficient and the test results showed good agreement.

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Author

Ki-Du Kim; Chang-Soo Lee; Sung-Cheon Han

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0263-8223)

Published

2007

Language

EN

Field

Engineering (Physical Sciences)