Solid-Shell Finite Elements for Tesselated Geometries |
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Authors: | Johannes Wimmer Stefanie Reese |
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Affiliation: | Institute of Applied Mechanics, Mies-van-der-Rohe-Str. 1, 52074 Aachen, Germany |
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Abstract: | Sandwich structures made of sheets of composite materials are in widespread use, particularly in the transportation industry. Finite Element simulation of the thin, tesselated structures with complex, three-dimensional material behaviour is a challenging task for the underlying element technology. In particular, frequently used linear isoparametric approaches exhibit unphysical stiffening phenomena. Recent developments in solid-shell finite element technology aim to overcome these undesirable effects. Here, they are applied to an example of a corrugated sandwich core under transversal compression. A study of convergence is conducted with respect to commercially available shell and solid finite elements, and their ability to reproduce the bending dominated deformation state. (© 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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