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- W2118990892 abstract "In this paper a new reduced integration eight-node solid-shell finite element is presented. The enhanced assumed strain (EAS) concept based on the Hu–Washizu variational principle requires only one EAS degree-of-freedom to cure volumetric and Poisson thickness locking. One key point of the derivation is the Taylor expansion of the inverse Jacobian with respect to the element center, which closely approximates the element shape and allows us to implement the assumed natural strain (ANS) concept to eliminate the curvature thickness and the transverse shear locking. The second crucial point is a combined Taylor expansion of the compatible strain with respect to the center of the element and the normal through the element center leading to an efficient and locking-free hourglass stabilization without rank deficiency. Hence, the element requires only a single integration point in the shell plane and at least two integration points in thickness direction. The formulation fulfills both the membrane and the bending patch test exactly, which has, to the authors' knowledge, not yet been achieved for reduced integration eight-node solid-shell elements in the literature. Owing to the three-dimensional modeling of the structure, fully three-dimensional material models can be implemented without additional assumptions. Copyright © 2009 John Wiley & Sons, Ltd." @default.
- W2118990892 created "2016-06-24" @default.
- W2118990892 creator A5003533079 @default.
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- W2118990892 date "2009-07-09" @default.
- W2118990892 modified "2023-10-05" @default.
- W2118990892 title "A reduced integration solid-shell finite element based on the EAS and the ANS concept-Geometrically linear problems" @default.
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- W2118990892 doi "https://doi.org/10.1002/nme.2653" @default.
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