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Nonlinear shell problem formulation accounting for through-the-thickness stretching and its finite element implementation
Ibrahimbegović, Adnan (Author), Brank, Boštjan (Author), Korelc, Jože (Author)

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Abstract
We discuss a theoretical formulation of shell model accounting for through-the-thickness stretching, which allows for large deformations and direct use of 3d constitutive equations. Three different possibilities for implementing this model within the framework of the finite element method are examined: one leading to 7 nodal parameters and the remaining two to 6 nodal parameters. The 7-parameter shell model with no simplification of kinematic terms is compared to the 7-parameter shell model which exploits usual simplifications of the Green–Lagrange strains. Two different ways of implementing the incompatible mode method for reducing the number of parameters to 6 are presented. One implementation uses an additive decomposition of the strains and the other an additive decomposition of the deformation gradient. Several numerical examples are given to illustrate performance of the shell elements developed herein.

Language:English
Keywords:shells, finite elements, higher order models, incompatible models
Tipology:1.06 - Published Scientific Conference Contribution (invited lecture)
Organization:FGG - Faculty of Civil and Geodetic Engineering
Year:2002
Publisher:Elsevier
Number of pages:Str. 33-62
Numbering:80
UDC:624.074.4:519.63
ISSN on article:0045-7949
COBISS.SI-ID:1793889 Link is opened in a new window
Views:2057
Downloads:738
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Record is a part of a journal

Title:Computational structures technology
Publisher:Saxe-Coburg
COBISS.SI-ID:1792609 This link opens in a new window

Secondary language

Language:English
Keywords:lupine, končni elementi, modeli višjega reda, nekompatibilne oblike

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