Unpublished conference/Abstract (Scientific congresses and symposiums)
Displacement Extrapolation Method : An alternative to J-integral for stress intensity factors computation using X-FEM
Minnebo, Hans; Majérus, Julien; Noels, Ludovic
2010IV European Conference on Computational Mechanics (ECCM2010)
 

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Abstract :
[en] Stress intensity factors (SIFs) computation techniques based on J-integral methods [1] are widely used in finite element codes. However, the Displacement Extrapolation Method (DEM) [2] is an alternative way to compute them. The idea is to process an extrapolation based on the relative displacement of the crack face nodes. This method is generally less accurate than integral methods, but it requires much less computational resources. The method is well documented and is implemented in some finite element software. The X-FEM introduced in [3] is suited for crack problems. However, the literature on DEM in the X-FEM case seems to be non-existent in the present time. This paper tries to fill this lack in the literature by describing a new method using X-FEM. The approach followed here is only developed for Linear Elastic Fracture Mechanics. Note that the finite element software Code_Aster [4] already computes SIFs with DEM in X-FEM, but in a slightly different way.
Disciplines :
Materials science & engineering
Mechanical engineering
Author, co-author :
Minnebo, Hans;  CENAERO
Majérus, Julien;  Université de Liège - ULiège > Aerospace and Mechanical Engineering > Computational & Multiscale Mechanics of Materials, > 2eme master aerospatiale
Noels, Ludovic  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3)
Language :
English
Title :
Displacement Extrapolation Method : An alternative to J-integral for stress intensity factors computation using X-FEM
Publication date :
2010
Number of pages :
2
Event name :
IV European Conference on Computational Mechanics (ECCM2010)
Event place :
Paris, France
Event date :
May 16-21, 2010
Audience :
International
Available on ORBi :
since 24 December 2009

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