The objective of this contribution is the development of a finite element model for finite rotation and large strain analysis of thin walled shells involving geometry intersections. The shell configuration is described by a linear polynomial in the thickness coordinate. The director of the shell is multiplicatively decomposed into a stretching parameter and an inextensible unit vector whose rotation is accomplished by an updated-rotation formulation. A rotation vector with three independent components is used throughout the shell which permits advantageously to consider smooth shells and compound shells by a unified procedure. This formulation is introduced into an isoparametric four-node element. The common locking phenomena are significantly reduced by an enhancement of the strain field and the assumed strain concept.
Başar,, Y. (2003). Finite Rotations and large Strains in Finite Element Shell Analysis. CMES-Computer Modeling in Engineering & Sciences, 4(2), 217–230. https://doi.org/10.3970/cmes.2003.004.217
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