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Modified crack closure integral technique for extraction of SIFs in meshfree methods

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Title Modified crack closure integral technique for extraction of SIFs in meshfree methods
 
Creator MUTHU, N
FALZON, BG
MAITI, SK
KHODDAM, S
 
Subject Element-free Galerkin
Crack closure integral
Stress intensity factor
Meshfree methods
STRESS INTENSITY FACTORS
FINITE-ELEMENT-METHOD
FRACTURE-MECHANICS
CURVED CRACKS
HIGHER-ORDER
COMPUTATION
EFG
APPROXIMATIONS
GROWTH
 
Description A new approach for extracting stress intensity factors (SIFs) by the element-free Galerkin (EFG) class of methods through a modified crack closure integral (MCCI) scheme is proposed Its primary feature is that it allows accurate calculation of mode I and mode II SIFs with a relatively simple and straightforward analysis even when a coarser nodal density is employed. The details of the adoption of the MCCI technique in the EFG method are described. Its performance is demonstrated through a number of case studies including mixed-mode and thermal problems in linear elastic fracture mechanics (LEFM). The results are compared with published theoretical solutions and those based on the displacement method, stress method, crack closure integral in conjunction with local smoothing (CCI-LS) technique, as well as the M-integral method. its advantages are discussed. (C) 2013 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2014-12-28T15:17:26Z
2014-12-28T15:17:26Z
2014
 
Type Article
 
Identifier FINITE ELEMENTS IN ANALYSIS AND DESIGN, 7825-39
0168-874X
1872-6925
http://dx.doi.org/10.1010/j.finel.2013.09.005
http://dspace.library.iitb.ac.in/jspui/handle/100/16851
 
Language English