Computation of the Three-Dimensional Stress State in Composite Shell Structures with Mixed Finite Elements |
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| Authors: | Marco Schürg Jens Wackerfuß Friedrich Gruttmann |
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| Affiliation: | Division of Solid Mechanics, TU Darmstadt, Hochschulstraße 1, 64289 Darmstadt |
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| Abstract: | Being able to compute the complete three-dimensional stress state in layered composite shell structures is essential in order to examine complicated interlaminar failure modes such as delamination. We lay out a mixed finite element formulation with independent displacements, rotations, stress resultants and shell strains. A mixed hybrid shell element with 4 nodes and 5 or 6 nodal degrees of freedom is developed, so that the element formulation can also be used for problems with shell intersections. (© 2010 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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