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  4. The finite cell method for the J2 flow theory of plasticity
 
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The finite cell method for the J2 flow theory of plasticity

Publikationstyp
Journal Article
Date Issued
2013-03-06
Sprache
English
Author(s)
Abedian, Alireza  
Parvizian, Jamshid  
Düster, Alexander  
Rank, Ernst  
Institut
Konstruktion und Festigkeit von Schiffen M-10  
TORE-URI
http://hdl.handle.net/11420/6900
Journal
Finite elements in analysis and design  
Volume
69
Start Page
37
End Page
47
Citation
Finite Elements in Analysis and Design (69): 37-47 (2013)
Publisher DOI
10.1016/j.finel.2013.01.006
Scopus ID
2-s2.0-84874886054
Publisher
North-Holland
The finite cell method (FCM) is an extension of a high-order finite element approximation space with the aim of simple meshing. In this paper, the FCM is implemented for J2 flow theory with nonlinear isotropic hardening for small displacements and small strains. The Newton-Raphson iteration scheme, combined with a radial return algorithm, is applied to find approximate solutions for the underlying physically nonlinear problem. A modified quadtree integration scheme is presented for the first time to capture the geometry accurately and overcome the high calculation cost of the standard quadtree integration scheme. Numerical examples in two and three dimensions demonstrate the efficiency of the FCM and the proposed integration scheme at solving materially nonlinear problems.
Subjects
Finite cell method
J flow theory 2
Octree
Plasticity
Quadtree
DDC Class
620: Ingenieurwissenschaften
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